Date: 05/21/99

Bulletin # 081499

Model year(s): 1999-2000

Description: Conditions with vehicle start and stall or vehicle no-start. A vehicle start and stall or no-start condition may exist from the interaction between a SKIS key and a Mobil Speedpass®. This condition occurs during cranking, when the Mobil Speedpass cylinder is held immediately adjacent to the key being used to start the vehicle.

Details: NOTE: THIS CONDITION DOES NOT OCCUR BY THE MOBIL SPEEDPASS® CYLINDER SIMPLY BEING ATTACHED TO THE SAME KEY RING. This bulletin applies to vehicles equipped with a sentry key immobilizer system (SKIS). If a stall or no-start condition exists due to this problem, the Vehicle Theft Security System (VTSS) indicator light will flash and the vehicle will stall after 2 seconds of running. The'Sentry key Immobilizer Module (SKIM) will set either the "Transponder Comm Failure", or a "Transponder CRC Failure" fault code. To diagnosis this condition, remove the Mobil Speedpasse from the key ring and attempt to start the vehicle. If the vehicle starts and remains running, SKIS key interaction with the Mobil Speedpasse was the cause. This condition will not cause a vehicle to stall after it has been running normally. If a start and stall or no-start condition continues once the Mobil Speedpass® is removed, continue with the appropriate diagnostic procedures.

In cases where SKIS key interaction with the Mobil Speedpasse is causing the condition, instruct the customer to slightly separate the SKIS key and Mobil Speedpass® when starting the vehicle. There are no long-term adverse effects on any of the components once the Mobil Speedpasse is removed from the SKIS operating area.

Date: 07/23/99

Bulletin # 211199 (supercedes 211398 dated October 16, 1998)

Model year(s): 1999-2000

Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 45RFE TRANSMISSION. The 45RFE transmission, newly introduced in the 1999 model year on Grand Cherokee models and for 2000 Dakota and Durango models, has some unique service features compared with its predecessors.

Details: The following are some items to consider during service:
Fluid Level Inspection:
1. Warm the fluid to at least 21 ° C (70° F.) by operating the vehicle.
2. Measure the transmission fluid temperature using the DRB IIIa.
3. Move the gear selector through drive and reverse. Place the gear selector in Park.
4. Check the fluid level against the fluid level/temperature chart (Figure 1).
NOTE: WHEN COLD (BELOW 10° C (50° F) THE FLUID LEVEL WILL NOT REGISTER ON THE DIPSTICK.

Fluid/Filter Replacement:
Accurate fluid level is difficult to determine cold. Initially add only 5 quarts of fluid during the refill procedure. **This amount will allow the engine to be started and the transmission to be operated in neutral until the transmission temperature has reached at least 21° C (70° F.). Once the fluid temperature is known, the final amount can be added without overfilling the transmission. Additionally, during this procedure, pressure switch and/or loss of prime DTC's may be set. If they are, erase them using the DRB IIIa before returning the vehicle to the customer.

Date: 08/20/99

Bulletin # 021299

Model year(s): 1999-2000

Description: Front end alignment - adjustable / offset ball joints.

Details: This bulletin involves installing offset ball joints to allow adjustments to camber, which were not previously possible on XJ, TJ and ZJ models and to camber and caster which were not possible on WJ models. This TSB releases new offset ball joints which provide the capability to make front-end alignment adjustments to camber and caster. Camber adjustments and caster adjustments on some models are fixed and built into the front axle. Caster adjustments could be made in the past on TJ, XJ and ZJ models. These parts are only to be used in situations where a slight lead or drift to one side of the road or another is occurring with no driver input or where a customer indicates that constant driver input is required to maintain straight ahead steering. These parts will not effect situations where a lead or drift condition is present only under braking.

Parts required:
05014876AA Ball joint - 0.5 degree
05014877AA Ball joint - 1.0 degree
05016972AA Ball joint - 2.5 degree

Date: 09/24/99

Bulletin # 030599

Model year(s): 1999-2000

Description: Diagnosis of the vehicle axle

Details: A sound may appear to be coming from the general area of the vehicle axle(s). The sound may be described as a growl, howl, or a whine. They may occur at different vehicle or engine speeds. They may also occur during different axle loading conditions i.e light driving, heavy driving, float, cruise or coast.

A correct and thorough diagnosis of the axle condition is perhaps the most important tool that the technician has in effecting a successful axle service. Because the transmission of an axle-like sound may be due to vehicle components other than the axle, a good diagnostic procedure is necessary in determining if the condition can be corrected by service to the internal axle components. Proper diagnosis may lead the technician to vehicle components other than the axle.

Date: 09/03/99

Bulletin # 211299

Model year(s): 1999-2000

Description: (superceded by 210900 dated 09/15/00)

Date: 09/03/99

Bulletin # 211399

Model year(s): 1999-2000

Description: 45RFE drive learn procedures for 45RFE transmissions.

Details: The 45RFE transmission adapts to its mechanical tolerances by learning the clutch volume indexes (CVI's) as well as the duty cycle and other parameters that control shift quality. Performing a Quick Learn will simply reset all transmission adaptive values to factory preset values and it will exercise the transmission clutches to learn an approximate value for the clutch CVI's.

Quick Learn should not be used as a remedy for shift quality complaints. Quick Learn resets more than 70 learn parameters to their preset values and will require-them to be relearned.

Quick Learn should only be used when a transmission has be replaced or overhauled, or when the Transmission Control Module has been replaced or flashed. Once Quick Learn is performed, an initial drive evaluation should be performed to determine if the transmission is shifting smoothly.

VERIFY THAT ALL APPLICABLE TECHNICAL SERVICE BULLETINS FOR SHIFT QUALITY HAVE BEEN PERFORMED PRIOR TO PERFORMING THE DRIVE LEARN PROCEDURE.

Date: 10/08/99

Bulletin # 140599

Model year(s): 1999-2000

Description: Fuel system pressure diagnostic procedures that may be used to determine the cause of a loss of fuel system pressure.

Details: A loss of pressure in the fuel system may occur at any rate depending upon the cause of the fuel leakage. Because the rate of fuel pressure loss may vary between vehicles, the symptoms of this condition may be different from one vehicle to another.

The condition may be more noticeable when the vehicle engine is started. Low or no fuel pressure may cause, a long crank time, a start and stall, an initial sag or hesitation, and other engine performance conditions. The condition may vary depending upon engine temperature and/or ambient temperature.

Date: 11/26/99

Bulletin # 030899

Model year(s): 1999-2000

Description: Information on new WJ 186FBI front axle pinion gear flanged nut and ground collapsible spacer. These improvements entered vehicle production approximately October 30, 1999.

Details: Quality improvements have been made to two components in the WJ 186FBI (Dana model 30) front axle. These revised axle components include:
1.) A flanged pinion gear nut to replace the old pinion nut and washer combination
2.) A collapsible pinion spacer with both ends ground smooth and parallel to each other.

Parts required:
04864845AB Spacer, pinion gear collapsible
05017755AA Nut, pinion gear flanged (186FBI/Dana model 30)

Description: Superceded by 0802501 dated 11/23/01

Date: 11/05/99

Bulletin # 234499

Model year(s): 1999-2000

Description: This bulletin involves installing a revised sun roof drain channel containing a secondary seal. A water leak may be present at the rear of the sunroof when the vehicle is in an automatic car wash containing very high-pressure water jets. Water can push past the primary seal and enter the drain channel. Under certain circumstances, the water may splash or mist into the passenger compartment. An improved drain channel has been developed which contains a secondary seal.

Details: If customers complain of this condition and no other sunroof problems are evident, perform the Repair Procedure.

Parts required:
05012769AA Drain Channel

Date: 11/12/99

Bulletin # 242499

Model year(s): 1999-2000

Description: Concerns with the heater A/C system changing to defrost mode when accelerating.

Details: The vacuum supply to the Heater A/C system may drop when accelerating or when speed control engages. This may cause the mode vacuum motor to switch to the defrost position. If no vacuum leaks are found, an additional vacuum check valve may have to be installed in the heater A/C line.

Parts required:
04677204 Check valve
Vacuum hose

Date: 11/12/99

Bulletin # 242599

Model year(s): 1999-2000

Description: Information on cold air leaking into passenger compartment foot well (plenum seal).

Details: This bulletin involves repositioning the heater housing to cowl plenum seal.

Parts required:
04318028 Foam tape
05012709AA Seal

Date: 11/29/99

Bulletin # 250299

Model year(s): 2000

Description: The vehicle On-Board Diagnostic (OBD) System may not illuminate the Malfunction Indicator Lamp (MIL) or set a Diagnostic Trouble Code (DTC) when a possible problem may have been detected by the catalyst monitor. This condition will most often occur when the technician is in the process of performing powertrain diagnostics.

Details: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A SINGLE UPSTREAM OXYGEN SENSOR AND BUILT BEFORE NOVEMBER 1, 1999.
VEHICLES INVOLVED IN THIS TECHNICAL SERVICE BULLETIN INCLUDE:
1). ALL JEEP AND TRUCK FEDERAL EMISSION PACKAGES (NAA) EXCEPT THE BRIBE WITH A 5.9L OR 8.OL HEAVY DUTY ENGINE.
2). ALL TRUCK CALIFORNIA EMISSION PACKAGES (NAE) EXCEPT THE AN OR THE DN WITH A 4.7L ENGINE, OR THE BR WITH 5.2L AUTO. TRANS OR 5.9L WITH AUTO TRANSMISSION.
3). ONLY JEEP TJ AND XJ CALIFORNIA EMISSION PACKAGES (NAE) WITH A 2.5L ENGINE.

Date: 12/10/99

Bulletin # 083999

Model year(s): 2000

Description: Communications stopping between JTEC PCM and a generic scan tool. This information applies to vehicles built before November 30, 1999.

Details: The JTEC Powertrain Control Module (PCM) may stop communications with a generic scan tool. It may appear that the sensor values are not updating on the generic scan tool screen. This condition may occur at any time during communications between the PCM and Generic Scan Tool. The condition will only occur if a Generic Scan Tool is-used to communicate with the PCM, or if the DRB III® is used to communicate with the PCM while it is in its generic scan tool mode. If the condition occurs while the DRB III" is being used in its generic scan tool mode, a "No Response" message will occur. If the condition occurs, the technician may have to restart initial communications with the PCM in order to continue with their diagnosis.

Using the Mopar Diagnostic System (MDS2) and or the Diagnostic Scan Tool (DRB III®) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC's are present, and the above symptoms have been experienced, perform the Repair procedure.

Date: 12/17/99

Bulletin # 240699A

Model year(s): 1999-2000

Description: Condensation may form on the exterior of the heater A/C housing and drip on the floor.

Details: This bulletin involves installing a foam insulator to the heater A/C housing.

Parts required:
05015245AA Self adhesive foam

Date: 02/04/00

Bulletin # 240100

Model year(s): 1999-2000

Description: Customers may complain of cold driver's feet or inadequate airflow to the driver's side floor.

Details: THIS BULLETIN APPLIES TO VEHICLE BUILT BEFORE SEPTEMBER 1, 1999. VEHICLES BUILT AFTER THAT DATE CONTAIN THE REVISED FLOOR DUCT.

1. Locate the driver's side floor duct and attaching screw
2. Remove the attaching screw and duct. This requires a very short #1 Phillips screw driver, approx. 1 1/2 inches in length.
3. Install the new duct and install the attaching screw.

Parts required:
05012723AB Duct - Driver's side floor

Date: 02/04/00

Bulletin # 180100

Model year(s): 1999-2000

Description: Misdiagnosed Leak Detection Pump systems with diagnostic trouble codes P1494, P0442 P0455, or P0456.

Details: During evaporative system diagnosis, Leak Detection Pumps have mistakenly been replaced. A thorough inspection for pinched, kinked, or disconnected supply vacuum lines (as currently listed in the Powertrain Diagnostic Procedures) is a critical step in diagnosing DTC P1494 (LDP SW OR MECHANICAL FAULT). Additionally, the other evaporative leak faults (DTC P0442 - SMALL LEAK, P0455 - LARGE LEAK, and P0456 - VERY SMALL LEAK) should have the supply vacuum lines examined for pinches or kinks prior to any LDP component replacement. The supply vacuum lines should be checked from the engine compartment all the way to the fuel tank, including the LDP and purge system.

Date: 02/04/00

Bulletin # 210100

Model year(s): 1999-2000

Description: Intermittent harsh engagement into reverse gear on certain RE model transmissions. The customer may experience a harsh engagement into gear when reverse is selected. This condition may be intermittent, and may occur more frequently as the transmission fluid warms to normal operating temperatures.

Details: THIS INFORMATION APPLIES TO 1999 AND 2000 MODEL YEAR VEHICLES EQUIPPED WITH EITHER A 42RE AUTOMATIC TRANSMISSION BUILT BEFORE SEPTEMBER 1, 1999 OR 2000 MODEL YEAR VEHICLES EQUIPPED WITH A 46RE AUTOMATIC TRANSMISSION BUILT BEFORE DECEMBER 1, 1999. Verify that the transmission fluid level is correct and that the valve body throttle valve and transmission shift linkage is adjusted properly. Using the Mopar Diagnostic System (MDS2) and or the Diagnostic Scan Tool (DRB III7) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC’s) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC’s are present, and the above symptoms have been experienced, perform the Repair Procedure.This bulletin involves the replacement of the transmission valve body upper housing separator plate and a valve body check ball. In addition, for 2000 M.Y. vehicles equipped with a 46RE transmission this bulletin involves selectively erasing and reprogramming the JTEC Powertrain Control Module (PCM) with new software (calibration change 00Cal13/13A).

Date: 03/03/00

Bulletin # 030300

Model year(s): 1999-2000

Description: Concerns with a whine-like sound heard coming from the rear axle of the vehicle at speeds greater than 40 MPH. The sound may be more noticeable once the vehicle powertrain components have reached normal operating temperatures.

Details: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 4.7L ENGINE BUILT BEFORE NOVEMBER 16, 1999. THIS REPAIR, BY ITSELF, WILL NOT CORRECT SIGNIFICANT REAR AXLE GENERATED SOUND. IN THOSE INCIDENCES, THIS REPAIR MAY BE MOST BENEFICIAL WHEN PERFORMED WITH AN AXLE REBUILD REPAIR.

Parts required:
52099487AC Rear propeller shaft (4.7L with a NV-247 transfer case)
52111490AB Rear propeller shaft (4.7L with a NV-242HD transfer case)
52099486AC Rear propeller shaft (4.7L with no transfer case - 4x2)

Date: 03/00

Bulletin # 8591 & 8592

Model Year(s):

Description: The On-Board Diagnostic (OBD) system on about 309,000 vehicles located out of California and vehicles located in California will not detect a catalyst failure as required by Federal and California regulations.

Details: Recall to reprogram PCM.

Date: 03/03/00

Bulletin # 231000 (supercedes 233799)

Model year(s): 1999-2000

Description: Window Regulator - sticking at top of travel.

Details: This bulletin involves enlarging the window regulator attaching holes in the door panel and replacing the window regulator.

Parts required:
55076466AD Regulator right
55076467AD Regulator left

Date: 03/24/00

Bulletin # 081100

Model year(s): 1999-2000

Description: CD player - CD compatibility.

Details: Some recordable Compact Disc media, such as CD-R and CD-RW, may not comply with the standard CD format used in automotive CD players. When these CD's are used, customers may encounter error messages, skipping, or delaminating of the labels, which can cause an eject failure. It is important to question whether these kinds of CD media are being used. When customers encounter these symptoms, check the system with a known playable CD. Explain that the media may not be compatible with some automotive CD players. Replacing or exchanging the CD player will not address these issues.

Date: 03/17/00

Bulletin # 080800 (supercedes 081699 June 11, 1999)

Model year(s): 1999-2000

Description: Keyless Entry Transmitter - intermittent operation.

Details: This condition may be intermittent and will have similar symptoms to a dead transmitter battery. This can be caused by a lost or intermittent contact between the battery terminal and the printed circuit board. Solution is to replace the transmitter.

Parts required:
56036859AD Transmitter - XJ/WJ (Use with 56036859, 56036859AB or 56036859AC)
56036860AD Transmitter - WJ (Use with 56036860, 56036860AB or 56036860AC)

Date: 05/05/00

Bulletin # 231700

Model year(s): 1999-2000

Description: Cargo Cover Shade Bracket Breaks.

Details: The cargo cover shade bracket may break, rendering the cover inoperable. A repair kit has been developed to eliminate the need to replace the cover assembly.

Parts required:
05017679AA Cargo Cover Repair Kit - Agate (AZ trim)
05017680AA Cargo Cover Repair Kit - Camel (K5 trim)
05017681AA Cargo Cover Repair Kit - Taupe (L5 trim)

Date: 05/19/00

Bulletin # 232100

Model year(s): 2000

Description: The front seat adjuster may bind or stick when adjusting the seat fore and aft (Manual Seats).

Details:
1. Remove the seat from the floor.
2. Pull the carpeting back and inspect the floor pan in the all areas where the seat attaches.
3. If any sealer or sound deadener over-spray build up is present in the area where the seat bolts to the floor, scrape away the material with an appropriate tool.
4. Coat any bare metal with a corrosion preventing primer and allow the primer to dry.
5. Repositions the carpet and install the seat.

Date: 06/23/00

Bulletin # 030400 (supercedes 030799 dated 10/29/99)

Model year(s): 1999-2000

Description: A condition may exist where the vehicles owner may feel an intermittent bump (stop-bump) once the vehicle is brought to a full stop. The repair technician may erroneously diagnose this condition as a delayed transmission down shift into first gear. This condition may occur 3 to 20 seconds following the stop or when the load on the rear driveline is reduced (e.g., when the applied brake pressure is decreased). The stop-bump condition may be the result of a binding between the splined surfaces of the rear propeller shaft slip yoke and the rear output shaft of either the transfer case or the transmission. As load on the driveline is reduced, the bound slip yoke will release suddenly causing a bump-like sensation. The condition may be intermittent. If the above condition has been experienced, then perform the Repair Procedure. The splined surfaces on the slip yoke section of the new propeller shaft are nickel coated to reduce the opportunity of binding.

Details: THIS BULLETIN APPLIES TO VEHICLES BUILT BEFORE SEPTEMBER 20,1999. A WJ EQUIPPED WITH A 4.0L ENGINE, A NV242 TRANSFER CASE, AND A 198 RBI (M35) REAR AXLE USES A DIFFERENT STYLE REAR PROPELLER SHAFT THAN THOSE WHICH ARE ADDRESSED IN THIS TECHNICAL SERVICE BULLETIN. FOR THIS VEHICLE, THE SPLINED SURFACES ON THE PROPELLER SHAFT SLIP YOKE AND THE TRANSFER CASE OUTPUT SHAFT ARE GREASED TO PREVENT A BINDING CONDITION AND DO NOT REQUIRE REPLACEMENT.

Parts required:
52099484AD Shaft, Drive (4.0L / 4x2 / 42RE / 198 RBI – M35)
52099485AE Shaft, Drive (4.0L / 4x4 / 42RE / NV247 / 198 RBI – M35)
52099486AC Shaft, Drive (4.7L / 4x2 / 45RFE / 226 RBA – M44)
52099487AC Shaft, Drive (4.7L / 4x4 / 45RFE / NV247 / 226 RBA –M44)
52111483AB Shaft, Drive (4.0L / 4x4 / 42RE / NV247 / 226 RBA – M44)
52111490AB Shaft, Drive (4.7L / 4x4 / 45RFE / NV242HD / 226 RBA – M44)

Date: 08/04/00

Bulletin # 082200A (supercedes 082200 dated 06/00)

Model year(s): 2000

Description: The customer may notice a lower than expected engine performance due to a possible loss or intermittent loss of the camshaft position sensor (CMP) signal. The loss of the CMP signal may be the result of the CMP physically contacting the tone wheel. If this occurs, the internal electronic circuitry of the CMP may become damaged. This condition may cause the illumination of the Malfunction Indicator Lamp (MIL). The camshaft position sensor may make contact with the tone wheel because the pad on the cylinder head, which the CMP attaches to, was over-machined.

Details: THE POSSIBILITY OF THIS CONDITION OCCURRING IS LIMITED TO A VERY SMALL QUANTITY OF 4.7L ENGINES. Verify the engine build date. Engines built with an engine date code from Nov. 01, 1999 to Nov. 03, 1999 may be affected. Most of the suspect engines were inspected and repaired by the engine assembly plant. If required, a select fit shim was installed between the CMP sensor and the cylinder head pad, and around the CMP sensor attaching bolt. The shim may have been glued in place to either the pad on the cylinder head or to the mounting tang on the camshaft position sensor. A technician making repairs in the area of the CMP sensor may overlook or lose the previously installed shim. This may then cause the camshaft position sensor to contact the tone wheel when the CMP sensor is reinstalled or replaced.

Date: 08/04/00

Bulletin # 233000

Model year(s): 1999-2000

Description: Seat belts, slow to retract.

Details: This bulletin involves installing a shield to cover the B pillar wire harness and isolate it from the seat belt webbing.

Parts required:
55116545AB Shield

Date: 09/29/00

Bulletin # 082700

Model year(s): 1999-2001

Description: Non-deployed airbag handling procedures.

Details: All damaged or faulty and non-deployed driver, passenger, or side airbag(s) or partially deployed 2001 JA and RS front airbags fall into one of two categories:

Non-Warranty Replacement: Dispose in a manner consistent with state, provincial, local and federal regulations.

Warranty Replacement: If the airbag is requested fro warranty return, the DIAL system will print a return document. Please return following the instructions in the current Mopar Hazardous Material Awareness Manual. If warranty material return is not required, dispose of in a manner consistent with state, provincial, local and federal regulations.

Description: Superceded by 1802501 dated 10/15/01

Date: 09/11/00 (02/00)

Bulletin # 090100A (supercedes 090100)

Model year(s): 1999-2000

Description:A customer may complain of an oil emulsion accumulation inside the engine oil fill housing. The oil emulsion will normally be foamy and be gray or light brown in color. The emulsion accumulation will often occur on cooler engine surfaces, like the inside of the oil fill housing. Modern engine oils are designed to address the oil emulsion phenomenon. Oil emulsion accumulation is normal and will not damage the engine A new baffle and a revised oil fill housing cap have been released. The baffle and oil cap will help to reduce the amount of oil emulsion accumulation within the oil fill housing.

Details: If the customer has experienced this issue, then perform the Repair Procedure.

Parts required:
53032126AA Baffle, Oil Fill Housing
53032389AC Cap, Oil Fill Housing

Description: Superceded by 1400201 dated 03/16/01

Date: 09/15/00

Bulletin # 190600

Model year(s): 1999-2000

Description: Steering gear honk on turns. A honking sound may be heard when making slow speed sharp turn such as turning into a driveway. The sound will normally happen when making right turns with left hand drive vehicle and when making left turns with right hand drive vehicles.

Details: Using the procedures outlined in the Service Manual, remove the steering gear and replace it.

Parts required:
52088272AD Steering Gear

Date: 09/29/00

Bulletin # 082800

Model year(s): 1999-2000

Description: A condition may exist where the speedometer or tachometer may be inoperative due to gauge needle being wrapped around the wrong side of the stop peg.

Details: This can happen in situations where low battery voltage is present such as jump starting a dead battery. The instrument cluster can cut out if voltage drops below 9.5 volts, causing the needle to drop on the wrong side of the gauge.

1. With the ignition switch in the off position, depress and hold the odometer-reset button.
2. Turn the ignition switch to the run position, continue holding the odometer reset button until the cluster needles start to move, then release the reset-button. (Do not allow the ignition switch to enter the start position) The gauge needles will sweep in both directions and come to rest in the correct position relative to the stop peg.

Date: 10/13/00

Bulletin # 2303800

Model year(s): 1999-2000

Description: Seat belt turning loop cover repair.

Details: This bulletin involves repairing the seat belt turning loop cover instead of replacing the seat belt assembly when the cover hinge has broken. The cover on the seat belt turning loop may break at the plastic hinge. A Repair Procedure has been developed to replace the cover rather that replacing the seat belt assembly.

Parts required:
5HK91LAZaa Cover - Agate
5HK91RK5aa Cover - Camel
5HK91WL5aa Cover - Taupe
5HK91XT5aa Cover - Sandstone

Date: 11/00

Bulletin # 234100

Model Year(s): 1999-2003

Description: Information on the optimum roof rack position.

Details: (see 231799 )

Date: 11/00

Bulletin # 230800B (supercedes 230800A dated 07/00)

Model year(s): 1999-2000

Description: Child seat tether anchors.

Details: User-ready child restraint tether strap anchors will be provided in passenger cars in the 2000 Model Year, and in light trucks in the 2001 Model Year. Tether straps improve the performance of child restraints in collisions. Because of the publicity that has accompanied the "Fit for a Kid" Program, owners of earlier products are expected to approach dealers for the free provision and installation of the anchor hardware. DaimlerChrysler Corporation is offering child seat tether anchors for this vehicle. Each tether anchor is packaged in a kit containing all necessary parts and a detailed instruction sheet.

Parts required:
05016869AA (Camel)
05016869AA (Taupe)

Date: 12/00

Bulletin # 080600REV

Model year(s): 1999-2002

Description: Wire splice repairs.

Details: This bulletin provides a revised wire splice procedure and related parts. This is the only procedure approved by DaimlerChrysler Engineering. This procedure must be used anytime a wire splice repair is required.

Date: 12/21/00

Bulletin # 1802300A (supercedes 1802300 dated 12/01/00)

Model year(s): 1999-2000

Description: Superceded by 1800101 dated 01/26/01

Date: 01/26/01

Bulletin # 1800101 (supercedes 1802300A)

Model year(s): 1999-2000

Description: Information regarding 4.7lL engine performance enhancements. Some vehicle engines may exhibit several of the following engine performance conditions:

1. Part throttle or wide open throttle spark knock.

2. Sag or hesitation following a cold engine start (except WJ with Calif. emissions).**

3. Rough idle.

4. Idle sag when decelerating to a stop.

Details: This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (calibration level 99Cal20 and 00Cal17).

Date: 05/04/01

Bulletin # 0900301

Model Year(s): 1999-2003

Description: NOTE: THIS BULLETIN APPLIES TO ALL DAIMLERCHRYSLER MODELS/ENGINES BUILT BEFORE AND AFTER THE 2001 MODEL YEAR. This bulletin reinforces a requirement to cease the current practice of using supplemental oil additive treatments in all DaimlerChrysler engines.

Details: Engine oil additives/supplements (EOS) should not be used to enhance engine oil performance. Engine oil additives/supplements should not be used to extend engine oil change intervals. No additive is known to be safe for engine durability and can degrade emission components.

Additives can contain undesirable materials that harm the long term durability of engines by:

1. Doubling the level of Phosphorus in the engine oil. The ILSAC (International Lubricant Standard Approval Committee) GF-2 and GF-3 standards require that engine oil contain no more than 0.10% Phosphorus to protect the vehicles emissions performance. Addition of engine oil additives/supplements can poison, from the added sulfur and phosphorus, catalysts and hinder efforts to guarantee our emissions performance to 80,000 miles and newrequirements of 150,000 miles.

2. Altering the viscosity characteristics of the engine oil so that it no longer meets the requirements of the specified viscosity grade.

3. Creating potential for an undesirable additive compatibility interaction in the engine crankcase. Generally it is not desirable to mix additive packages from different suppliers in the crankcase; there have been reports of low temperature engine failures caused by additive package incompatibility with such mixtures.

Date: 03/16/01

Bulletin # 1400201 (supercedes 140600 dated 09/15/00)

Model year(s): 1999-2001

Description: This bulletin involves the repair of the fuel pump module. The customer may experience a longer than normal engine cranking time prior to engine start. This condition may be caused by fuel pressure loss due to a worn sealing ring within the fuel module.

NOTE: QUALITY ANALYSIS HAS REVEALED THAT A WORN SEALING RING IS THE PRIMARY REASON WHY THE FUEL MODULE IS REPLACED FOR FUEL PRESSURE LEAK DOWN. IT IS RECOMMENDED THAT THE SEALING RING BE REPLACED BEFORE A FUEL MODULE ASSEMBLY REPLACEMENT IS ATTEMPTED.

Details:1. Start and run the engine. Verify normal fuel system pressure of 339 kPa +/- 34 kPa (49.2 psi +/- 5 psi).

2. Stop the engine. Verify that the fuel system pressure does not fall below 207 kPa (30 psi) in less than five (5) minutes.

3. If the fuel pressure does not fall below 207 kPa (30 psi) in less than five (5) minutes,then the long crank time may not be due to the fuel system. Further diagnosis must be made to the entire engine system.

4. If fuel pressure does fall below 207 kPa (30 psi) in less than five (5) minutes, then refer to TSB 14-05-99 for additional fuel system diagnostic assistance.

5. If diagnosis determines that the cause of the fuel system pressure loss is due to the fuel pump module, then inspect the fuel pump module part number label for its assembly build date code (Julian date). The part number label is affixed to the fuel pump module wire harness (pigtail), near the electrical connector to the body wire harness.

6. Inspect the bottom row of numbers on the fuel module label and locate the module build date code. Determine the date of build (Julian date) for the fuel module assembly. The first two numbers in the date code indicate the calendar year (1998 = 98, 1999 = 99, 2000 = 00, 2001 = 01), and the remaining three numbers in the code (1 to 365) represent the day of the calendar year (Figure 1).

7. If the module part label indicates that the fuel module assembly was built on or before November 04, 1999 (Julian date of 99308), then a spacer must be used with the sealing ring. The split washer in the repair kit is used as the sealing ring spacer.

NOTE: FAILURE TO USE THE SPLIT WASHER, AS A SPACER FOR THE SEALING RING (WHEN REQUIRED), MAY CAUSE EXCESSIVE MOVEMENT AND DAMAGE TO THE SEALING RING.

8. If the module part label indicates that the fuel module assembly was built after November 04, 1999 (Julian date of 99308), then a spacer must NOT be used with the sealing ring. The split washer in the repair kit can be discarded.

NOTE: SOME REPLACEMENT FUEL PUMP MODULES, BUILT AFTER NOVEMBER 04, 1999 (DATE CODE 99308), HAVE BEEN USED TO REPLACE FUEL MODULES BUILT PRIOR TO NOV. 04, 1999. IT IS IMPORTANT THAT PRIOR TO EACH REPAIR THE MODULE DATE CODE BE PROPERLY DETERMINED.

Parts required:
05019308AA Kit, Fuel Pump Module Repair

Date: 05/18/01

Bulletin # 2400701

Model year(s): 1999-2001

Description: A customer may experience colder or warmer than desired air temperatures coming from the vehicle HVAC system vents. This change in air temperature may occur gradually over time and only on vehicles equipped with the Automatic Zone Control (AZC) HVAC system. The air from the driver side HVAC vents will tend to increase in temperature, with this condition being more noticable when outside ambient air temperatures are in the 16°C to 27°C (60°F to 80°F) range. The air from the front passenger HVAC vents will tend to decrease in temperature, with this condition being more noticeable when ambient temperatures are in the -7°C to 4°C (20°F to 40°F) range.

Details: This bulletin involves the replacement of the Automatic Zone Control assembly. Since the condition occurs gradually over time, the technician may not be able to readily verify the condition. If the HVAC system appears to be operating correctly and the customer complains of the above condition, then perform the Repair Procedure.

Parts required:
55115903AE Assembly, Automatic Temperature Control

Date: 05/11/01

Bulletin # 2500401

Model year(s): 1999-2001

Description: Additional diagnostic for diagnostic trouble codes caused by an Evaporative System leak. This bulletin involves information which may be of assistance when diagnosing the vehicle evaporative system for a possible leak source and its cause.

Details: DTC P0442, P0455 or P0456 are all diagnostic codes indicating a leak has been detected in the EVAP system. The bulletin points out that, while most leaks will be external such as a loose gas cap or damaged hose, internal leaks also are possible. The most likely source of an internal leak is the Duty Cycle Purge valve (DCP). This valve could be stuck open due to corrosion, dirt from outside or debris from inside the system, such as charcoal from the vapor canister. The DCP valve is tested by on-board diagnostics only after the Purge Flow Monitor is passed; if that monitor fails, the DCP valve will not be tested. The bulletin offers helpful tips for troubleshooting and understanding the logic of the EVAP diagnostic routine

Date: 06/11/01

Model Year(s): 2000

Bulletin # 1801301

Description: Some vehicle engines may exhibit a rough idle and / or Malfunction Indicator Lamp (MIL) light on condition upon initial start-up after a cold soak when temperatures are below 50 degrees F (10 degrees c). This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (Cal level 00Cal15C).

Description: Superceded by 0500302B dated 05/13/02.

Date: 09/21/01

Bulletin # 2302701 (supercedes 2303400A dated 12/15/2000)

Model year(s): 1999-2002

Description: Description: Superceded by 2301502 dated 4/01/02

Repair procedure:
1. See diagram. Cut insulator sleeve (PN 56028371AA) to make two (2) insulator sleeves about 25-30 mm (1 in.) in height.

2. Install one sleeve around injector #3, with the slit on the upward facing side of the injector. Install the other sleeve with the slit on the downward facing side of the injector.

3. Confirm sleeve is flush to intake manifold surface around injector.

4. Check injector #3 wire and ensure that the injector is rotated to a 2 o’clock position (from driver’s side of vehicle).

Parts required:
56028371AA Ignition Wire Shield

Date: 09/29/00

Bulletin # 082700

Model year(s): 1999-2001

Description: Non-deployed airbag handling procedures.

Details: All damaged or faulty and non-deployed driver, passenger, or side airbag(s) or partially deployed 2001 JA and RS front airbags fall into one of two categories:

Non-Warranty Replacement: Dispose in a manner consistent with state, provincial, local and federal regulations.

Warranty Replacement: If the airbag is requested fro warranty return, the DIAL system will print a return document. Please return following the instructions in the current Mopar Hazardous Material Awareness Manual. If warranty material return is not required, dispose of in a manner consistent with state, provincial, local and federal regulations.

Date: 11/03/00

Bulletin # 0803300

Model year(s): 2001

Description: Some vehicles may exhibit a fault code in the radio when performing diagnostic using the DRB III. The code reads "Cold CD". The fault code is not displayed to the customer and is only displayed when performing diagnostics.

Details: Information only

Date: 11/00

Bulletin # 083600

Model Year(s): 1999-2002

Description: Circuits effected by ignition off draw (IOD) fuse.

Details: The components/features that are disabled by the Ignition Off Draw (IOD) fuse varies from vehicle model to vehicle model. For the WJ: (Labeled JB Power) Audio Amp, BCM Memory - BCM controlled components/features operate normally when the ignition switch is in the RUN position Flipper Window Power Release, Glovebox Lamp, HEVAC module (ATC), Instrument Panel Courtesy Lamps, Key Chime, Overhead Lamps, Power Outlets (front and rear) Radio, Rear Wiper, SKIM Module - Sentry Key equipped vehicles may require a longer crank time to start engine, Underhood Lamp, and Vehicle Theft Alarm (VTA) Set Lamp (VTA is disabled with IOD pulled).

Date: 12/00

Bulletin # 080600REV

Model year(s): 1999-2002

Description: Wire splice repairs.

Details: This bulletin provides a revised wire splice procedure and related parts. This is the only procedure approved by DaimlerChrysler Engineering. This procedure must be used anytime a wire splice repair is required.

Date: 12/08/00

Bulletin # 0803800

Model Year(s): 2001

Description: Regarding safety systems - vehicle modifications / repair. Current DaimlerChrysler vehicles may contain any or all of the following safety systems: driver airbags, passenger airbags, side curtain airbags, side seat airbags, or seat belt pre-tensioners. All these systems contain multiple sophisticated sensitive electrical and mechanical components. The location and function of all safety system components must be determined before performing repairs; including accident, mechanical or electrical, or vehicle modifications such as adding an after-market sunroof.

Details: WARNING: ANY INADVERTENT SAFETY SYSTEM COMPONENT OR ASSOCIATED WIRING DAMAGE/MODIFICATION OR COMPONENT LOCATION CHANGE MAY DISABLE ANY OF THE SAFETY SYSTEMS. Refer to the appropriate vehicle Service Manual to determine location and function of all safety systems before servicing vehicle. All systems should be checked for functionality after the vehicle modifications/repairs are complete.

Date: 02/02/01

Bulletin # 2300301

Model Year(s): 2001

Description: All factory installed equipment, such as a sunroof, meet the upper interior head protection requirements of FMVSS 201. Sunroofs or other equipment installed in new vehicles by dealerships or for dealerships must also meet the requirements of FMVSS 201.

Details: WARNING: DEALERS INSTALLING OR HAVING INSTALLED EQUIPMENT NOT MEETING FMVSS 201 STANDARDS ON NEW VEHICLES MAY BE ASSUMING LIABILITY FOR HEAD IMPACT INJURIES IN THAT AREA.

Date: 03/02/01

Bulletin # 0700201

Model Year(s): 2001

Description: NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 4.7L ENGINE, WERE BUILT PRIOR TO FEBRUARY 12, 2001, AND HAVE PCM SOFTWARE THAT IS EARLIER (LESS OR LOWER) THAN 2001 CALIBRATION 15. This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (calibration level 01Cal15).

Details: A customer may complain that the vehicle engine is operating at higher than normal engine temperatures. The condition may be caused by a delay in the start of the hydraulic cooling fan. The ambient temperature and how the vehicle is used may impact the amount of engine temperature increase.

Date: 05/04/01

Bulletin # 0900301

Model Year(s): 1999-2003

Description: NOTE: THIS BULLETIN APPLIES TO ALL DAIMLERCHRYSLER MODELS/ENGINES BUILT BEFORE AND AFTER THE 2001 MODEL YEAR. This bulletin reinforces a requirement to cease the current practice of using supplemental oil additive treatments in all DaimlerChrysler engines.

Details: Engine oil additives/supplements (EOS) should not be used to enhance engine oil performance. Engine oil additives/supplements should not be used to extend engine oil change intervals. No additive is known to be safe for engine durability and can degrade emission components.

Additives can contain undesirable materials that harm the long term durability of engines by:

1. Doubling the level of Phosphorus in the engine oil. The ILSAC (International Lubricant Standard Approval Committee) GF-2 and GF-3 standards require that engine oil contain no more than 0.10% Phosphorus to protect the vehicles emissions performance. Addition of engine oil additives/supplements can poison, from the added sulfur and phosphorus, catalysts and hinder efforts to guarantee our emissions performance to 80,000 miles and newrequirements of 150,000 miles.

2. Altering the viscosity characteristics of the engine oil so that it no longer meets the requirements of the specified viscosity grade.

3. Creating potential for an undesirable additive compatibility interaction in the engine crankcase. Generally it is not desirable to mix additive packages from different suppliers in the crankcase; there have been reports of low temperature engine failures caused by additive package incompatibility with such mixtures.

Date: 03/16/01

Bulletin # 1400201 (supercedes 140600 dated 09/15/00)

Model year(s): 1999-2001

Description: This bulletin involves the repair of the fuel pump module. The customer may experience a longer than normal engine cranking time prior to engine start. This condition may be caused by fuel pressure loss due to a worn sealing ring within the fuel module.

NOTE: QUALITY ANALYSIS HAS REVEALED THAT A WORN SEALING RING IS THE PRIMARY REASON WHY THE FUEL MODULE IS REPLACED FOR FUEL PRESSURE LEAK DOWN. IT IS RECOMMENDED THAT THE SEALING RING BE REPLACED BEFORE A FUEL MODULE ASSEMBLY REPLACEMENT IS ATTEMPTED.

Details:1. Start and run the engine. Verify normal fuel system pressure of 339 kPa +/- 34 kPa (49.2 psi +/- 5 psi).

2. Stop the engine. Verify that the fuel system pressure does not fall below 207 kPa (30 psi) in less than five (5) minutes.

3. If the fuel pressure does not fall below 207 kPa (30 psi) in less than five (5) minutes,then the long crank time may not be due to the fuel system. Further diagnosis must be made to the entire engine system.

4. If fuel pressure does fall below 207 kPa (30 psi) in less than five (5) minutes, then refer to TSB 14-05-99 for additional fuel system diagnostic assistance.

5. If diagnosis determines that the cause of the fuel system pressure loss is due to the fuel pump module, then inspect the fuel pump module part number label for its assembly build date code (Julian date). The part number label is affixed to the fuel pump module wire harness (pigtail), near the electrical connector to the body wire harness.

6. Inspect the bottom row of numbers on the fuel module label and locate the module build date code. Determine the date of build (Julian date) for the fuel module assembly. The first two numbers in the date code indicate the calendar year (1998 = 98, 1999 = 99, 2000 = 00, 2001 = 01), and the remaining three numbers in the code (1 to 365) represent the day of the calendar year (Figure 1).

7. If the module part label indicates that the fuel module assembly was built on or before November 04, 1999 (Julian date of 99308), then a spacer must be used with the sealing ring. The split washer in the repair kit is used as the sealing ring spacer.

NOTE: FAILURE TO USE THE SPLIT WASHER, AS A SPACER FOR THE SEALING RING (WHEN REQUIRED), MAY CAUSE EXCESSIVE MOVEMENT AND DAMAGE TO THE SEALING RING.

8. If the module part label indicates that the fuel module assembly was built after November 04, 1999 (Julian date of 99308), then a spacer must NOT be used with the sealing ring. The split washer in the repair kit can be discarded.

NOTE: SOME REPLACEMENT FUEL PUMP MODULES, BUILT AFTER NOVEMBER 04, 1999 (DATE CODE 99308), HAVE BEEN USED TO REPLACE FUEL MODULES BUILT PRIOR TO NOV. 04, 1999. IT IS IMPORTANT THAT PRIOR TO EACH REPAIR THE MODULE DATE CODE BE PROPERLY DETERMINED.

Parts required:
05019308AA Kit, Fuel Pump Module Repair

Date: 03/30/01

Bulletin # 1800901

Model Year(s): 2001

Description: Operation and diagnostics for the EVAP system's Leak Detection Pump.

Details: Leak Detection Pump Operation and Diagnosis Booklet (Publication No. 81-170-00006) is being provided with this Technical Service Bulletin to aid in the diagnosis and repair of the evaporative emission systems on today’s vehicles. This information will be incorporated into future service information as it is published.

Date: 04/20/01

Bulletin # 1801001

Model Year(s): 2001

Description: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 4.0L (ERH) ENGINE BUILT PRIOR TO APRIL 30, 2001 AND CALIBRATION LEVEL PRIOR TO (LESS OR LOWER THAN) THOSE LISTED BELOW. This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (WJ/TJ — calibration level 01Cal14C, XJ — calibration level 15B.)

Details: Some vehicle engines may exhibit a rough idle and/or MIL light “on” condition upon initial start-up after a cold soak when temperatures are below 50°F (10°C). Using the Diagnostic Scan Tool (DRBIII) with the appropriate Diagnostic Procedures, verify all engine/transmission systems are functioning as designed. If other DiagnosticTrouble Codes are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If the only condition seen is the rough idle and/or MIL light “on” condition upon initial start-up after a cold soak when temperatures are below 50°F (10°C) perform the Repair Procedure.

Date: 05/25/01

Bulletin # 0801001

Model Year(s): 1999-2002

Description: Air bag / clock spring service for various models including 1999-2002 Grand Cherokee.

Details: When servicing any airbag system, it is essential to follow the proper Service Manual and/or Diagnostic Manual procedures for diagnosing, testing, and replacement of any component. When diagnosing any airbag squib circuit Diagnostic Trouble Code (DTC) with a DRBIII, the use of the Airbag Load Tool (special tool 8310 and 8443) is required. The Airbag Load Tool, used in conjunction with the DRBIII are used to isolate and test components and wiring for failure. Only replace the component or wiring that has failed. This will reduce unnecessary cost to the customer.

NOTE: Airbag replacement is not required every time it is removed or when another component has failed. Use of the DRBIII and Airbag Load Tool will determine if the airbag has failed and replacement is needed.

Recent analysis of returned clock springs have indicated that prior service may have contributed to the clock spring's failure. Do not use silicone or other lubricants on or near the clock spring. Lubricants are often used in the clock spring area of the steering column to eliminate noise. Lubricants may have an adverse effect on the clock spring.

Clock spring centering - Any repair that may disrupt the positioning of the steering wheel with the front wheels will require that the clock spring be centered. This includes clock spring replacement, steering column service, HVAC service, steering gear service, and front suspension crossmember service. Refer to the appropriate Service Manual for the clock spring centering procedure.

Date: 05/18/01

Bulletin # 2400701

Model year(s): 1999-2001

Description: A customer may experience colder or warmer than desired air temperatures coming from the vehicle HVAC system vents. This change in air temperature may occur gradually over time and only on vehicles equipped with the Automatic Zone Control (AZC) HVAC system. The air from the driver side HVAC vents will tend to increase in temperature, with this condition being more noticable when outside ambient air temperatures are in the 16°C to 27°C (60°F to 80°F) range. The air from the front passenger HVAC vents will tend to decrease in temperature, with this condition being more noticeable when ambient temperatures are in the -7°C to 4°C (20°F to 40°F) range.

Details: This bulletin involves the replacement of the Automatic Zone Control assembly. Since the condition occurs gradually over time, the technician may not be able to readily verify the condition. If the HVAC system appears to be operating correctly and the customer complains of the above condition, then perform the Repair Procedure.

Parts required:
55115903AE Assembly, Automatic Temperature Control

Date: 05/11/01

Bulletin # 2500401

Model year(s): 1999-2001

Description: Additional diagnostic for diagnostic trouble codes caused by an Evaporative System leak. This bulletin involves information which may be of assistance when diagnosing the vehicle evaporative system for a possible leak source and its cause.

Details: DTC P0442, P0455 or P0456 are all diagnostic codes indicating a leak has been detected in the EVAP system. The bulletin points out that, while most leaks will be external such as a loose gas cap or damaged hose, internal leaks also are possible. The most likely source of an internal leak is the Duty Cycle Purge valve (DCP). This valve could be stuck open due to corrosion, dirt from outside or debris from inside the system, such as charcoal from the vapor canister. The DCP valve is tested by on-board diagnostics only after the Purge Flow Monitor is passed; if that monitor fails, the DCP valve will not be tested. The bulletin offers helpful tips for troubleshooting and understanding the logic of the EVAP diagnostic routine

Date: 06/29/01

Bulletin # 2100601 (supercedes 211699 10/22/99)

Model year(s): 1999-2002

Description: Information pertaining to automatic transmission fluid usage ATF+4®.

Details:1999-2002 Grand Cherokee. A new transmission fluid (ATF+4® Type 9602) has been developed and is being used as factory fill for all vehicles with Chrysler automatic transmissions. Until now, vehicles originally filled with ATF+2 or ATF+3 were to be serviced with ATF+3. Effective immediately, it is recommended that all vehicles with Chrysler automatic transmissions (except for 1999 and earlier minivans) be serviced with ATF+4®.

NOTE: ATF+4® MUST always be used in vehicles that were originally filled with ATF+4®. ATF+4® is compatible with ATF+3 and can be used to top off vehicles that currently have ATF+2 or ATF+3. DO NOT use ATF+2 or ATF+3 to top off vehicles that have ATF+4® fluid.

Benefits:
Better anti-wear properties
Improved rust/corrosion prevention
Controls oxidation
Eliminates deposits
Controls friction
Retains anti-foaming properties
Superior properties for low temperature operation

Fluid color:
Mopar ATF+4® is a World Class Fluid having exceptional durability. However, the red dye used in ATF+4® is not permanent; as the fluid ages it may become darker or appear brown in color. ATF+4® also has a unique odor that may change with age. With ATF+4® fluid, color and odor are no longer indicators of fluid condition and do not support a fluid change.

Description: Superceded by 1900502 dated 05/20/02

Description: Superceded by 2200102 dated 03/11/02

Date: 09/14/01

Bulletin # 0500501A (supercedes 0500501 Aug 10,2001)

Model Year(s): 1999-2002

Description: Superceded by 0500302B dated 05/13/02.

Date: 09/17/01

Bulletin # 1802101A

Model Year(s): 2001

Description: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 4.7L (EVA) ENGINE AND CALIBRATION LEVEL PRIOR TO (LESS OR LOWER THAN) THOSE LISTED BELOW. This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (WJ O1CAL15C, DN O1CAL 14D).

Details: 4.7lL engine performance enhancements. Some vehicles may exhibit one or more of the following engine performance conditions: Part throttle or wide-open throttle spark knock; Sag or hesitation after a cold engine start up.

Date: 09/21/01

Bulletin # 2302701 (supercedes 2303400A dated 12/15/2000)

Model year(s): 1999-2002

Description: Description: Superceded by 2301502 dated 4/01/02

Repair procedure:
1. See diagram. Cut insulator sleeve (PN 56028371AA) to make two (2) insulator sleeves about 25-30 mm (1 in.) in height.

2. Install one sleeve around injector #3, with the slit on the upward facing side of the injector. Install the other sleeve with the slit on the downward facing side of the injector.

3. Confirm sleeve is flush to intake manifold surface around injector.

4. Check injector #3 wire and ensure that the injector is rotated to a 2 o’clock position (from driver’s side of vehicle).

Parts required:
56028371AA Ignition Wire Shield

NEWLY RELEASED SOLENOID FOR DTC P1499 - HYDRAULIC FAN SOLENOID CIRCUIT FAULT

Date: 12/16/02

Bulletin # 0700502

Model Year(s): 2001-2004

Description: NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A HYDRAULIC COOLING SYSTEM (SALES CODE NMH). This bulletin involves the replacement of the hydraulic fan solenoid instead of the complete cooling fan module.

Details: The customer may experience a MIL illumination due to DTC P1499 - Hydraulic Fan Solenoid Circuit. The MIL illumination may occur intermittently.

Diagnosis:
1. Proceed with this bulletin only if the cause of the MIL illumination is due to DTC P1499 - Hydraulic Fan Solenoid Circuit Fault.

2. Refer to the 2002 or later Jeep Grand Cherokee – Powertrain Diagnostic Procedures Manual to properly diagnose DTC P1499.

3. If the diagnostic procedures determine that the hydraulic fan solenoid is at fault, then perform the Repair Procedure.

Parts required:
05102210AA Solenoid, Hydraulic Fan

Date: 05/04/01

Bulletin # 0900301

Model Year(s): 1999-2003

Description: NOTE: THIS BULLETIN APPLIES TO ALL DAIMLERCHRYSLER MODELS/ENGINES BUILT BEFORE AND AFTER THE 2001 MODEL YEAR. This bulletin reinforces a requirement to cease the current practice of using supplemental oil additive treatments in all DaimlerChrysler engines.

Details: Engine oil additives/supplements (EOS) should not be used to enhance engine oil performance. Engine oil additives/supplements should not be used to extend engine oil change intervals. No additive is known to be safe for engine durability and can degrade emission components.

Additives can contain undesirable materials that harm the long term durability of engines by:

1. Doubling the level of Phosphorus in the engine oil. The ILSAC (International Lubricant Standard Approval Committee) GF-2 and GF-3 standards require that engine oil contain no more than 0.10% Phosphorus to protect the vehicles emissions performance. Addition of engine oil additives/supplements can poison, from the added sulfur and phosphorus, catalysts and hinder efforts to guarantee our emissions performance to 80,000 miles and newrequirements of 150,000 miles.

2. Altering the viscosity characteristics of the engine oil so that it no longer meets the requirements of the specified viscosity grade.

3. Creating potential for an undesirable additive compatibility interaction in the engine crankcase. Generally it is not desirable to mix additive packages from different suppliers in the crankcase; there have been reports of low temperature engine failures caused by additive package incompatibility with such mixtures.

Date: 06/29/01

Bulletin # 2100601 (supercedes 211699 10/22/99)

Model year(s): 1999-2002

Description: Information pertaining to automatic transmission fluid usage ATF+4®.

Details:1999-2002 Grand Cherokee. A new transmission fluid (ATF+4® Type 9602) has been developed and is being used as factory fill for all vehicles with Chrysler automatic transmissions. Until now, vehicles originally filled with ATF+2 or ATF+3 were to be serviced with ATF+3. Effective immediately, it is recommended that all vehicles with Chrysler automatic transmissions (except for 1999 and earlier minivans) be serviced with ATF+4®.

NOTE: ATF+4® MUST always be used in vehicles that were originally filled with ATF+4®. ATF+4® is compatible with ATF+3 and can be used to top off vehicles that currently have ATF+2 or ATF+3. DO NOT use ATF+2 or ATF+3 to top off vehicles that have ATF+4® fluid.

Benefits:
Better anti-wear properties
Improved rust/corrosion prevention
Controls oxidation
Eliminates deposits
Controls friction
Retains anti-foaming properties
Superior properties for low temperature operation

Fluid color:
Mopar ATF+4® is a World Class Fluid having exceptional durability. However, the red dye used in ATF+4® is not permanent; as the fluid ages it may become darker or appear brown in color. ATF+4® also has a unique odor that may change with age. With ATF+4® fluid, color and odor are no longer indicators of fluid condition and do not support a fluid change.

Date: 08/03/01

Bulletin # 0801601

Model Year(s): 2002

Description: Radio - Caution: Locking Antenna Collar.

Details: All 2002 vehicles equipped with radios will have a new locking radio antenna connector. This connector will require that a sliding plastic collar be pulled away from the radio, similar to an air hose connector, to release the lock. Pulling the antenna straight out of the radio without activating the release could damage the antenna or the radio.

Date: 09/21/01

Bulletin # 0801701

Model Year(s): 2002

Description: Safety systems - vehicle modifications / repair (electrical).

Details: Current DaimlerChrysler vehicles may contain any or all of the following safety systems: driver airbags, passenger airbags, side curtain airbags, side seat airbags, seat belt pre-tensioners, anti-lock brakes, electronic throttle control, or traction control. All these systems contain multiple sophisticated sensitive electrical and mechanical components. The location and function of all safety system components must be determined before performing repairs; including accident, mechanical or electrical, or vehicle modifications such as adding an after-market sunroof.

WARNING: ANY INADVERTENT SAFETY SYSTEM COMPONENT OR ASSOCIATED WIRING DAMAGE/MODIFICATION OR COMPONENT LOCATION CHANGE MAY DISABLE ANY OF THE SAFETY SYSTEMS. Refer to the appropriate vehicle Service Manual to determine location and function of all safety systems before servicing vehicle. All systems should be checked for functionality after the vehicle modifications/repairs are complete.

Date: 09/28/01

Bulletin # 2200101A

Model Year(s):2001-2002

Description: Superceded by 2200102 dated 03/11/02

Date: 09/14/01

Bulletin # 0500501A (supercedes 0500501 Aug 10,2001)

Model Year(s): 1999-2002

Description: Superceded by 0500302B dated 05/13/02.

Date: 09/21/01

Bulletin # 2302701 (supercedes 2303400A dated 12/15/2000)

Model year(s): 1999-2002

Description: Description: Superceded by 2301502 dated 4/01/02

Date: 10/26/01

Bulletin # 1900901

Model Year(s): 2001-2002

Description: Driver airbag - Trim Cover Service.

Details: Driver airbag trim covers/horn switches for the above vehicles are serviceable and as such, when applicable, must be used instead of replacing the airbag module assembly. Airbag module assemblies returned for trim cover and serviceable horn switch issues, are subject to charge back. In most cases, the service manuals show driver airbag replacement procedures in the Restraints section of Group 8. Several MOPAR driver airbag cover packages include instruction sheets. Because of the long list of part numbers involved they are not listed here, please consult the MOPAR parts catalog for the correct part number(s).

Details: This bulletin has been superceded by 1400102A dated 10/07/2002

Details: The optimum position for the roof rack is with the rear cross bar at the rearmost position and the front cross bar in the fourth position from the rear (Fig. 1). This position will provide the least amount of air turbulence and wind whistle-like sounds.

Repair procedure:
1. See diagram. Cut insulator sleeve (PN 56028371AA) to make two (2) insulator sleeves about 25-30 mm (1 in.) in height.

2. Install one sleeve around injector #3, with the slit on the upward facing side of the injector. Install the other sleeve with the slit on the downward facing side of the injector.

3. Confirm sleeve is flush to intake manifold surface around injector.

4. Check injector #3 wire and ensure that the injector is rotated to a 2 o’clock position (from driver’s side of vehicle).

Parts required:
56028371AA Ignition Wire Shield

POP/TICK SOUND IN STEERING WHEEL AREA

Date: 2/07/03

Bulletin # 1900103

Model Year(s): 2002-2003

Description: NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH TILT STEERING (SALES CODE SUA) AND BUILT ON OR AFTER JANUARY 14, 2002. FOR VEHICLES BUILT ON OR BEFORE JANUARY 13, 2002 REFER TO SERVICE BULLETIN 19-008-01 DATED NOVEMBER 23, 2001.

A pop/tick sound may be heard coming from the steering wheel area while the vehicle is in motion. The sound is associated with input from the road surface. It may be difficult to readily repeat the sound once it has occurred until additional road input is experienced, such as driving over an expansion strip.

Details: This bulletin involves replacing the spring washer in the steering column and upper tilt head housing assembly and on WJ/WG - vehicles, replacing the jacket clamp bracket

TIRE PRESSURE MONITOR SYSTEM PERFORMANCE AFFECTED WHEN LARGE AMBIENT TEMPERATURE CHANGES OCCUR

Date: 2/07/03

Bulletin # 2200103

Model Year(s): 2002-2004

Description: Some 2002 to 2004 Grand Cherokee vehicles incorporate an optional Tire Pressure Monitor (TPM) System that displays the actual tire pressure for all four (4) road tires and will also display the tire pressure for certain full size spare tires, if equipped. The Electronic Vehicle Information Center (EVIC) is used to display TPM System messages. The TPM System message “Low Tire Pressure” will be displayed on the EVIC when at least of one of the tire pressure sensor(s) detects a tire pressure of 25 PSI or less. The “Low Tire Pressure” message is designed to turn off when a tire pressure of 28 PSI or higher is detected.

Tire pressure can drop approximately 1 PSI for every 10 F drop in ambient temperature. In colder climates, significant changes in ambient temperature can influence tire pressure readings. For example, a vehicle with tire pressures initially set at 29 PSI in a 70 F heated garage and then allowed to set long enough outside in 20 F ambient temperature, can experience a drop of 5 PSI in tire pressure due only to the change in ambient temperature. The tire pressure would now read approximately 24 PSI. In this instance, the TPM System will sense that tire pressure is below the 25 PSI threshold and will display the “Low Tire Pressure” message.

Details: To reduce the occurrence of the above condition and any unnecessary customer concern about the performance of their vehicle TPM System, dealers servicing Grand Cherokee vehicles with the optional TPM System should ensure that tire pressures are set to the recommended tire pressure. The recommended tire pressure can be found on the tire pressure label that is located on rear face of the driver’s door. SETTING TIRE PRESSURES AT THE RECOMMENDED TIRE PRESSURE (LABEL PRESSURE) WILL MINIMIZE THE POSSIBILITY OF TRIGGERING LOW (OR HIGH) TIRE PRESSURE MESSAGES BY THE TPM SYSTEM.

CHECK AIR PRESSURE IN TIRES WITH AN ACCURATE TIRE PRESSURE GAUGE. DO NOT USE THE TIRE PRESSURE DISPLAY ON THE EVIC TO ADJUST TIRE PRESSURE. When reading actual tire pressures know that cold inflation pressure is defined as the air pressure inside the tire(s) after the vehicle has not been driven for at least a three (3) hour period, or the air pressure inside the tire(s) when the vehicle has not been driven more than one (1) mile after the minimum three (3) hour non-driving period has occurred.

POWER STEERING MOAN OR WHINE-LIKE SOUND WHEN TURNING

Date: 2/28/03

Bulletin # 1900203

Model Year(s): 2002-2003

Description: NOTE: THIS BULLETIN APPLIES TO DOMESTIC GRAND CHEROKEE VEHICLES EQUIPPED WITH A 4.7L OR 4.7L H.O. ENGINE (SALES CODES EVA OR EVC) AND BUILT PRIOR TO NOVEMBER 15, 2002, AND DOMESTIC VEHICLES EQUIPPED WITH A 4.0L ENGINE (SALES CODE ERH) AND BUILT PRIOR TO FEBRUARY 12, 2003.

Details: The customer while driving may experience a moan or whine-like sound when turning. The condition may occur when either a left or right turn is made.

Diagnosis:
1. With the transmission in park and the parking brake set, start the vehicle engine.
2. Slowly turn the steering wheel in one direction and then in the other direction.
3. If a loud moan or whine-like sound occurs during step 2, inspect the low pressure outlet hose and high pressure inlet hose for possible hose contact in the area of the steering gear assembly. See Figure 1.
4. If hose contact is present between the low and high pressure power steering hoses, perform the Repair Procedure.

Repair Procedure:
1. Clean the top of the power steering gear assembly where the hose connections are located.
2. Slightly loosen the low and high pressure power steering hoses at their connection to the power steering gear assembly.
3. Position each hose so that no contact between the two hoses is present. Maintain a minimum distance of 3.2 mm (0.125 inches) between the two hoses. Do not separate the two hoses too far or possible hose contact with other vehicle components (i.e. air box snorkel) may occur. See Figure 1.
4. Tighten both hose connections to 22.5 Nm (17 ft. lbs.).

SPECIAL OFFSET BALL JOINT - ALLOWS ADJUSTMENT TO CASTER AND CAMBER ANGLES

Date: June 10, 2002

Bulletin # 0200102

Model Year(s): 2001-2003

Description: The customer may experience a slight lead or drift to either side of the road. This condition may occur when there is no driver input to the steering system, or when the driver must maintain a constant input to the steering system in order to maintain a straight ahead direction of the vehicle.

NOTE: THIS BULLETIN WILL NOT EFFECT SITUATIONS WHERE A LEAD OR DRIFT CONDITION IS PRESENT ONLY WHEN BRAKING.

Details: Three new upper ball joints are available with different offsets: 0.5 degree, 1.0 degree and 1.5 degrees. One or two can be installed as needed to obtain correct alignment.

Diagnosis: The front end caster and/or camber angles on certain Jeep vehicles are fixed. For Grand Cherokee vehicles both the caster and camber angles are non-adjustable (fixed). The offset ball joint should be used only as required. It is very important that the following steps are performed in order and prior to any consideration being given towards the use of an offset ball joint(s):

1. Verify matching original equipment tires and wheels.
2. Verify correct tire inflation pressures.
3. Inspect for tire condition and abnormal wear. Refer to the appropriate Service Manual, Section 22 - Tires, for additional diagnostic assistance.
4. Inspect for and correct any worn or damaged steering and front suspension components.
5. Inspect for and correct any worn or damaged wheel bearings/hubs.
6. Verify that no brake drag is present (front or rear).
7. Road test the vehicle to determine if the slight lead or drift is present and not crown sensitive. While road testing, verify that the condition is present even when the transmission is in neutral.
8. If the condition is present, cross switch the front tires. If the condition follows the tires address the condition with the tire manufacturer.

If a slight lead or drift condition is still present after the above steps have been performed, perform the Repair Procedure.

Parts required:
05014876AC Ball Joint - 0.5 degree
05014877AC Ball Joint - 1.0 degree
05016972AC Ball Joint - 1.5 degree

REAL WOOD TRIM SCRATCH REPAIR

Date: 7/22/02

Bulletin # 2303302

Model Year(s): 2002-2004 Overland

Description: This bulletin involves finesse sanding and polishing scratched real wood trim panels (Overland models only).

Details: Real wood trim steering wheels and interior trim panels may become scratched/damaged by sharp objects such as rings, keys, etc. Visually inspect the wood trim if a scratch is present, the following Repair Procedure should be used.

Parts required:
Sand Paper, 400 Grit
AR NPN Sand Paper, 600 Grit
AR NPN Sand Paper, 1000 Grit
AR NPN Sand Paper, 1500 Grit
AR NPN Sand Paper, 2000 Grit
AR NPN Compound, Polishing

Repair procedure:
1. Depending on the depth of the scratch, sand the scratched area with 400 grit or finer sandpaper. Use a linear (back and forth) sanding action, DO NOT use a circular motion.
2. Continue sanding until the scratched area is flush with the surrounding surface of the steering wheel/trim panel.
3. Use the next finest grit sandpaper to sand the scratched area until the linear scuff pattern is uniform with the finer grit.
4. Repeat step 3 until sanding with 2000 grit sandpaper is completed.
5. Polish the sanded area with polishing compound to return the surface to a high luster.
6. Clean any sanding/polishing residue from the vehicle.

POLICY:
Damage occurring during shipment is reimbursable via transportation claim. Damage occurring while in dealer inventory is dealer responsibility. Damage caused after the sale of the vehicle is not covered under warranty.

OPTIMUM ROOF RACK CROSS BAR POSITION TO PREVENT AIR TURBULENCE CONCERNS

Date: 7/22/02

Bulletin # 2303402

Model Year(s): 2002-2004

Description: This bulletin involves the positioning of the roof rack cross bars.

Details: The optimum position for the roof rack is with the rear cross bar at the rearmost position and the front cross bar in the fourth position from the rear (Fig. 1). This position will provide the least amount of air turbulence and wind whistle-like sounds.

LOUD AUDIBLE BURST OF STATIC OR DISTORTION FROM RADIO

Date: 09/02/02

Bulletin # 0801402

Model Year(s): 2003

Description: NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH SALES CODES RBB (AM/FM CASSETTE) OR RBK (AM/FM CD), RADIOS BUILT PRIOR TO JULY 31, 2002.

Details: The affected radios may exhibit a loud intermittent sound or burst of static within the first 30 seconds of the radio turning on. This condition only affects the model years/part numbers listed below. The Huntsville service centers are equipped to handle the affected radios on an exchange basis. Make sure to describe the condition as a “static burst” when communicating with the service center.

2003 MY WJ's p/n 05054354AF or 05054354AG RBK and p/n 05064335AF or 05064335AG RBB radios will be exchanged with an AH level part. NOTE: THIS CONDITION IS CAUSED BY SOFTWARE INTERNAL TO THE RADIO. NO OTHER VEHICLE COMPONENTS OR SYSTEMS ARE AFFECTED.

NEWLY RELEASED SOLENOID FOR DTC P1499 - HYDRAULIC FAN SOLENOID CIRCUIT FAULT

Date: 12/16/02

Bulletin # 0700502

Model Year(s): 2001-2004

Description: NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A HYDRAULIC COOLING SYSTEM (SALES CODE NMH). This bulletin involves the replacement of the hydraulic fan solenoid instead of the complete cooling fan module.

Details: The customer may experience a MIL illumination due to DTC P1499 - Hydraulic Fan Solenoid Circuit. The MIL illumination may occur intermittently.

Diagnosis:
1. Proceed with this bulletin only if the cause of the MIL illumination is due to DTC P1499 - Hydraulic Fan Solenoid Circuit Fault.

2. Refer to the 2002 or later Jeep Grand Cherokee – Powertrain Diagnostic Procedures Manual to properly diagnose DTC P1499.

3. If the diagnostic procedures determine that the hydraulic fan solenoid is at fault, then perform the Repair Procedure.

Parts required:
05102210AA Solenoid, Hydraulic Fan

FLASH: MIL ILLUMINATION FOR ERRONEOUS DTC P0456 - EVAP MONITOR SMALL LEAK DETECTED

Date: 1/31/03

Bulletin # 1800203

Model Year(s): 2002-2003

Description: NOTE: THIS BULLETIN APPLIES TO 2002-2003 WJs EQUIPPED WITH THE 4.7L ENGINE (SALES CODE EVA OR EVC). This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.

Details: The Malfunction Indicator Lamp (MIL) may illuminate due to the erroneous detection of a small leak in the vehicle’s evaporative system. The Diagnostic Trouble Code (DTC) associated with this condition is P0456 (EVAP Monitor Small Leak Detected.) No system leaks are detected when the evaporative system is tested. The DTC may be intermittent. If MIL is on and Diagnostic Trouble Code (DTC) P0456 is present, perform the Repair Procedure.

POP/TICK SOUND IN STEERING WHEEL AREA

Date: 2/07/03

Bulletin # 1900103

Model Year(s): 2002-2003

Description: NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH TILT STEERING (SALES CODE SUA) AND BUILT ON OR AFTER JANUARY 14, 2002. FOR VEHICLES BUILT ON OR BEFORE JANUARY 13, 2002 REFER TO SERVICE BULLETIN 19-008-01 DATED NOVEMBER 23, 2001.

A pop/tick sound may be heard coming from the steering wheel area while the vehicle is in motion. The sound is associated with input from the road surface. It may be difficult to readily repeat the sound once it has occurred until additional road input is experienced, such as driving over an expansion strip.

Details: This bulletin involves replacing the spring washer in the steering column and upper tilt head housing assembly and on WJ/WG - vehicles, replacing the jacket clamp bracket.

POWER STEERING MOAN OR WHINE-LIKE SOUND WHEN TURNING

Date: 2/28/03

Bulletin # 1900203

Model Year(s): 2002-2003

Description: NOTE: THIS BULLETIN APPLIES TO DOMESTIC GRAND CHEROKEE VEHICLES EQUIPPED WITH A 4.7L OR 4.7L H.O. ENGINE (SALES CODES EVA OR EVC) AND BUILT PRIOR TO NOVEMBER 15, 2002, AND DOMESTIC VEHICLES EQUIPPED WITH A 4.0L ENGINE (SALES CODE ERH) AND BUILT PRIOR TO FEBRUARY 12, 2003.

Details: The customer while driving may experience a moan or whine-like sound when turning. The condition may occur when either a left or right turn is made.

Diagnosis:
1. With the transmission in park and the parking brake set, start the vehicle engine.
2. Slowly turn the steering wheel in one direction and then in the other direction.
3. If a loud moan or whine-like sound occurs during step 2, inspect the low pressure outlet hose and high pressure inlet hose for possible hose contact in the area of the steering gear assembly. See Figure 1.
4. If hose contact is present between the low and high pressure power steering hoses, perform the Repair Procedure.

Repair Procedure:
1. Clean the top of the power steering gear assembly where the hose connections are located.
2. Slightly loosen the low and high pressure power steering hoses at their connection to the power steering gear assembly.
3. Position each hose so that no contact between the two hoses is present. Maintain a minimum distance of 3.2 mm (0.125 inches) between the two hoses. Do not separate the two hoses too far or possible hose contact with other vehicle components (i.e. air box snorkel) may occur. See Figure 1.
4. Tighten both hose connections to 22.5 Nm (17 ft. lbs.).

TIRE PRESSURE MONITOR SYSTEM PERFORMANCE AFFECTED WHEN LARGE AMBIENT TEMPERATURE CHANGES OCCUR

Date: 2/07/03

Bulletin # 2200103

Model Year(s): 2002-2004

Description: Some 2002 to 2004 Grand Cherokee vehicles incorporate an optional Tire Pressure Monitor (TPM) System that displays the actual tire pressure for all four (4) road tires and will also display the tire pressure for certain full size spare tires, if equipped. The Electronic Vehicle Information Center (EVIC) is used to display TPM System messages. The TPM System message “Low Tire Pressure” will be displayed on the EVIC when at least of one of the tire pressure sensor(s) detects a tire pressure of 25 PSI or less. The “Low Tire Pressure” message is designed to turn off when a tire pressure of 28 PSI or higher is detected.

Tire pressure can drop approximately 1 PSI for every 10 F drop in ambient temperature. In colder climates, significant changes in ambient temperature can influence tire pressure readings. For example, a vehicle with tire pressures initially set at 29 PSI in a 70 F heated garage and then allowed to set long enough outside in 20 F ambient temperature, can experience a drop of 5 PSI in tire pressure due only to the change in ambient temperature. The tire pressure would now read approximately 24 PSI. In this instance, the TPM System will sense that tire pressure is below the 25 PSI threshold and will display the “Low Tire Pressure” message.

Details: To reduce the occurrence of the above condition and any unnecessary customer concern about the performance of their vehicle TPM System, dealers servicing Grand Cherokee vehicles with the optional TPM System should ensure that tire pressures are set to the recommended tire pressure. The recommended tire pressure can be found on the tire pressure label that is located on rear face of the driver’s door. SETTING TIRE PRESSURES AT THE RECOMMENDED TIRE PRESSURE (LABEL PRESSURE) WILL MINIMIZE THE POSSIBILITY OF TRIGGERING LOW (OR HIGH) TIRE PRESSURE MESSAGES BY THE TPM SYSTEM.

CHECK AIR PRESSURE IN TIRES WITH AN ACCURATE TIRE PRESSURE GAUGE. DO NOT USE THE TIRE PRESSURE DISPLAY ON THE EVIC TO ADJUST TIRE PRESSURE. When reading actual tire pressures know that cold inflation pressure is defined as the air pressure inside the tire(s) after the vehicle has not been driven for at least a three (3) hour period, or the air pressure inside the tire(s) when the vehicle has not been driven more than one (1) mile after the minimum three (3) hour non-driving period has occurred.

DUTY CYCLE PURGE SOLENOID CAUSES A TICKING-LIKE SOUND FROM ENGINE COMPARTMENT

Date: 2/21/03

Bulletin # 2500103

Model Year(s): 2002-2004

Description: This bulletin involves isolating the Duty Cycle Purge (DCP) solenoid from the vehicle body.

Details: The customer while sitting in the passenger compartment may notice a ticking-like sound when the engine is idling. The sound may be more noticeable in colder ambient temperatures. Mechanical contact between the DCP solenoid and the body of the vehicle may be the cause of the ticking-like sound.

The ticking-like sound may also be described as a tapping or clicking-like sound. The sound may appear to be similar to the sound produced by a worn or loose engine valve train component, such as a valve lifter.

Diagnosis:

1. Use the Actuator Mode on the DRB III® scan tool to cycle the DCP solenoid. Navigate through the following menus on the DRB III®: Main Menu, Stand-Alone Menu, 1998–2003 Diagnostic Menu, Select System Menu - Engine, Select Function Menu, Actuators Menu. Scroll over to page 4 of 5 in the Actuators Menu to find the Evap Purge Solenoid.

2. Verify the customer complaint. Sit in the driver seat with all doors closed. The fan on the DRB III® can be quieted by temporarily covering the fan exhaust port with your hand. Actuate the DCP solenoid.

3. If the ticking-like sound is present, remove the DCP solenoid from its mounting bracket but keep the evaporative and electrical connections connected to the DCP solenoid. Allow the DCP solenoid to hang in place free of contact with the rest of the vehicle.

4. Actuate the DCP solenoid with the DRB III®. If the ticking-like sound is now diminished in sound level or is no longer present, then perform the Repair Procedure.

5. If the ticking-like sound is still present, then further diagnosis is required. NOTE: THIS REPAIR PROCEDURE IS INTENDED TO ADDRESS DCP SOLENOID GENERATED SOUND THAT IS TRANSMITTED THROUGH THE BODY OF THE VEHICLE (STRUCTURE BORNE). THE DCP SOLENOID MAY ALSO EMIT SOUNDS THAT ARE AUDIBLE AND NOT BODY TRANSMITTED. A DEGREE OF AUDIBLE SOUND FROM THE DCP SOLENOID IS NORMAL TO THE OPERATION OF THE DCP.

Parts required:
05114514AA   U-Bracket, DCP Isolation (includes a 3 mm x 14 mm wide slot rubber bushing)
53030987   Bushing, DCP Solenoid Narrow Slot (slot in bushing is 1.3 mm x 14 mm)

TRANSMISSION SHIFT IMPROVEMENTS

Date: 3/07/03

Bulletin # 1800503

Model Year(s): 2003

Description: This bulletin involves selectively erasing and reprogramming the Next Generation Controller (NGC) Powertrain Control Module (PCM) or the Transmission Control Module (TCM) with new software. Note: THE TechCONNECT/MDS2 MUST BE OPERATING WITH CIS CD2129 OR HIGHER, AVAILABLE MARCH 31, 2003.

Details: Vehicle operator may experience the following - Selecting "OD-Off" may produce high engine speeds while operating with the transfer case in low range. Using a Scan Tool (DRBIII) with the appropriate Diagnostic Procedures Manual, verify all engine systems are functioning as designed. If DTCs are present other than those listed above, record them on the repair order and repair as necessary before proceeding further with this bulletin. Service technicians are not required to duplicate these concerns. If the vehicle operator's description matches the Symptom/Conditions or the vehicle exhibits any of the Symptom/Conditions, perform Repair Procedure.