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Service bulletins for the 2023 Jeep Grand Wagoneer

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

552 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
9100390 Rev12024-07-18. Service bulletin. POWER TRAIN. D Clutch Repair Kit TSB 21-039-24 REV A - D-Clutch repair kit missing Carrier Output Shaft Seals It has been identified the Carrier Output Shaft is missing 2 seals for some of the kits delivered to dealers. These seals are not available individually. MOPAR is working to get the parts. Do not rebuild the transmission without these seals otherwise the vehicle will not have reverse. Please refer to STAR Online Publication S2421000001 for instructions for inspecting if the seals are present on the Output Shaft Carrier Shaft. If seals are missing, please return the D-Clutch Kit as defective and order another kit. Transmission replacement is not recommended as this issue should be solved with replacement kits
08-122-242024-06-07. Service bulletin. POWER TRAIN. "Transfer Case Shift Motor Wire Harness Connector Not Secured **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● U0418-00 - Implausible Data Received From Brake System Control Module 1. ● C1444-98 - T-Case Motor Overuse-Component or System Over Temperature. ● C00A8-13 - 4WD/AWD Transfer Case Unit Actuator Position Sensor B-Circuit Open. ● C00A7-13 - 4WD/AWD Transfer Case Unit Actuator Position Sensor A-Circuit Open. ● C149E-64 - Transfer Case Motor Position Sensor-Signal Plausibility Failure. ● C1423-64 - Transfer Case Internal Performance-Signal Plausibility Failure. ● C1406-13 - Transfer Case Brake Control-Circuit Open. ● C1477-4B - Transfer Case Clutch-Over Temperature. ● C140A-13 - Transfer Case Motor Control-Circuit Open. ● U041E-00 - Invalid Data Received From All Wheel Drive Control Module. ● U0422-00 - Implausible Data Received From Body Control Module. ● U0418-00 - Implausible Data Received From Brake System Control Module 1. ● U041E-00 - Invalid Data Received Form All Wheel Drive Control Module. ● U0403-00 - Implausible Data Received From T-Case. The customer may also comment on the following: ● 4WD Service light displayed in the Instrument Panel Cluster (IPC)."
91003442024-06-04. Service bulletin. POWER TRAIN. "VALVE BODY & CONTROL UNIT Transmission Ensure clutch pressure check has been completed and documented prior to valve body replacement."
18003242024-03-18. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? **P00C6 - Fuel Rail Pressure Too Low - Engine Cranking Bank 1. ? P06DD - Engine Oil Pressure Control Circuit Performance/Stuck Off. ? P0461 - Fuel Level Sensor "A" Circuit Range/Performance.** ? P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected. ? P0604-00 - Internal Control Module Random Access Memory Ram Error. ? P060C-00 - Internal Control Module Main Processor Performance. This bulletin involves reprogramming the PCM with the latest available software.
08239232024-01-16. Service bulletin. POWER TRAIN. Transfer Case Shift Motor Wire Harness Connector Not Secured Customers may experience a Malfunction Indicator Lamp illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes have been set: U0418-00 Implausible Data Received From Brake System Control Module 1. C1444-98 T-Case Motor Overuse-Component or System Over Temperature. C00A8-13 4WD/AWD Transfer Case Unit Actuator Position Sensor B-Circuit Open. C00A7-13 4WD/AWD Transfer Case Unit Actuator Position Sensor A-Circuit Open. C149E-64 Transfer Case Motor Position Sensor-Signal Plausibility Failure. C1423-64 Transfer Case Internal Performance-Signal Plausibility Failure. C1406-13 Transfer Case Brake Control-Circuit Open. C1477-4B Transfer Case Clutch-Over Temperature. C140A-13 Transfer Case Motor Control-Circuit Open. U041E-00 Invalid Data Received From All Wheel Drive Control Module. U0422-00 Implausible Data Received From Body Control Module. U0418-00 Implausible Data Received From Brake System Control Module 1. U041E-00 Invalid Data Received Form All Wheel Drive Control Module. U0403-00 Implausible Data Received From T-Case. The customer may also comment on the following: 4WD Service light displayed in the Instrument Panel Cluster. This bulletin involves performing a push?pull?push test on the transfer case shift motor wire harness connector.
S23090000132024-01-16. Service bulletin. POWER TRAIN. Verifying Camshaft Diagnosis
S23250000082024-01-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Mil-On/Check Engine Lamp-On with ANY DTCs. Freeze frame data from the powertrain control module (PCM).
09018232024-01-08. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; POWER TRAIN. Oil Leak from Turbo Oil Supply Line Customers may experience the following: ? Oil leak from turbo oil supply line. This bulletin involves replacing the turbo oil feed line.
S23210000082024-01-08. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EXTERIOR LIGHTING. Malfunction Indicator Lamp (MIL) Illumination, Diagnostic Trouble Codes (DTCs) P0731 ? Gear 1 Shift Incorrect Ratio, And/Or P07D9 ? Gear Shift Incorrect Ratio, Set.
S23080000172024-01-02. Service bulletin. POWER TRAIN. Battery Drain, No Start, Power Liftgate Inoperative
S23230000172024-01-02. Service bulletin. POWER TRAIN. Enabling A New Power Side Step Module.
18104232023-12-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected. ? P0604-00 - Internal Control Module Random Access Memory Ram Error. ? P060C-00 - Internal Control Module Main Processor Performance. This bulletin involves reprogramming the PCM with the latest available software.
S23210000082023-10-30. Service bulletin. POWER TRAIN. Malfunction Indicator Lamp (MIL) Illumination, Diagnostic Trouble Codes (DTCs) P0731 ? Gear 1 Shift Incorrect Ratio, And/Or P07D9 ? Gear Shift Incorrect Ratio, Set.
91002172023-10-30. Service bulletin. STRUCTURE:BODY:STEP/LADDER; ENGINE AND ENGINE COOLING; POWER TRAIN. Motor, Power Running Board For issues with a stuck or binding power side step, DO NOT replace the motor or hinge(s). The hinges must be cleaned and lubricated at regular intervals. See latest version of Star Online #S2223000044, the vehicle owner's manual, or published service information in Service Library. Replacements of the motor and hinge assembly due to lack of maintenance could be subject to chargeback.
S23190000052023-08-21. Service bulletin. STEERING:ELECTRIC POWER ASSIST SYSTEM; STEERING; POWER TRAIN. Customer Complaint Of Loss Of Power Steering Assist.
S22080000042023-08-21. Service bulletin. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES; POWER TRAIN; STEERING. Adjustable Pedals Cannot Be Adjusted, Power Tilt Steering Will Not Adjust
91001752023-08-21. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Sunroof power express open/close Due to Dual Pane Sunroof switches being returned with no trouble found, proper diagnosis and testing needs to be done before replacing the switch. There is Diagnostic and Testing documentation available for this part in service Library to check the switch before replacing the part. For additional assistance, contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
08120232023-07-31. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. Flash: Drivetrain Control Module (DTCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) or warning lamp illumination. Upon further investigation the technician may find that the multiple Diagnostic Trouble Codes (DTCs) have been set: ? C1403-29 - Transfer Case Range Position Sensor-Signal Invalid. ? C14AA-62 - Transfer Case Motor Position Sensor Supply-Signal Compare Failure. This bulletin involves reprogramming the DTCM with the latest software available.
91001692023-07-31. Service bulletin. STEERING; POWER TRAIN. Electric Power Steering Gear If replacing the steering gear for a leaking fluid concern, there is no oil or grease inside the gear that can leak out. Dark colored grease is used to install the bellows on the gear housing as an assembly aid. If fluid is noticed on the gear, the gear itself is not the source of the fluid leak.
18040232023-05-30. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set: ? P05CC-00 - Cold Start A Camshaft Position Timing Performance Bank 1. Customer may also experience the following: ? Poor or insufficient A/C performance during towing or other high torque maneuvers. ? Belt chirp is heard at startup or when A/C cycles on. This bulletin involves reprogramming the PCM with the latest available software.
S23080000172023-04-17. Service bulletin. POWER TRAIN. Battery Drain, No Start, Power Liftgate Inoperative
S23230000172023-04-17. Service bulletin. POWER TRAIN. Enabling A New Power Side Step Module.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.