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Service bulletins for the 2026 Jeep Grand Cherokee L

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.

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

By type

By component

By trouble code

Bulletins, newest first
S2623000001 REV.A2026-09-03. Service bulletin. ELECTRICAL SYSTEM. Rotary Shifter Lights Blinking, Shifter Not Moving, Not Going Into Gear.
91008892026-09-03. Service bulletin. STRUCTURE:BODY. SEAL, Sunroof, Interior Prior to replacing this part, please ensure the repair is due to issues other than water leaks. This seal is exclusively for acoustic insulation, do not replace for water leak issues.
91008912026-09-03. Service bulletin. ELECTRICAL SYSTEM. Display Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders, Warranty, Mopar, Customer Pay and Service Contract. Order "68" part number for New, Unsold units only.
1142652026-09-03. Service bulletin. ELECTRICAL SYSTEM. TRANSMITTER KIT & TRANSMITTER - INTEGRATED KEY FOB
1142682026-09-03. Service bulletin. ELECTRICAL SYSTEM. TRANSMITTER KIT & TRANSMITTER - INTEGRATED KEY FOB
S2618000003 REV.G2026-08-26. Service bulletin. ENGINE. MIL-On, Engine Runs Rough
09-020-262026-08-26. Service bulletin. ENGINE. Umbrella Valve Seal Missing From Cylinder Vehicle may exhibit a MIL-ON. SYMPTOM: Upon inspection the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have set: ● P0300-00 - Random/Multiple Cylinder Misfire Detected. ● P0301-00 - Cylinder 1 Misfire. ● P0302-00 - Cylinder 2 Misfire. ● P0303-00 - Cylinder 3 Misfire. ● P0304-00 - Cylinder 4 Misfire. This bulletin involves inspecting for a missing umbrella valve seal on the underside of the cylinder head cover and, if necessary, replacing the cylinder head cover.
09-017-26 REV. A2026-08-26. Service bulletin. ENGINE. Umbrella Valve Seal Missing From Cylinder Head Cover Customer may experience a MIL-ON and/or an indication of low engine oil level. SYMPTOM: Upon inspection the technician may find the following: 1. One or more of the following Diagnostic Trouble Codes (DTCs) have set: ● P0300-00 - Random/Multiple Cylinder Misfire Detected. ● P0301-00 - Cylinder 1 Misfire. ● P0302-00 - Cylinder 2 Misfire. ● P0303-00 - Cylinder 3 Misfire. ● P0304-00 - Cylinder 4 Misfire. 2. Engine oil level is low. IMPORTANT! If none of above symptoms are present, this TSB does NOT apply. This bulletin involves inspecting the engine oil level, possibly inspecting for a missing umbrella valve seal on the underside of the cylinder head cover and, if necessary, replacing the cylinder head cover.
S2523000032 REV.B2026-08-19. Service bulletin. WHEELS; STEERING. Steering Dragging While Recreational Flat Towing Behind RV.
S2508000029 REV.B2026-08-19. Service bulletin. BACK OVER PREVENTION: WARNINGS. Instrument Panel Cluster (IPC) Message “Park Assist System Unavailable” or “Service Park Assist System”, “Rear Braking Assist Unavailable” or “Service Rear Braking Assist System" with Performance Diagnostic Trouble Codes (DTCs)
S2618000003 REV.F2026-08-19. Service bulletin. ENGINE. MIL-On, Engine Runs Rough
S26230000522026-08-13. Service bulletin. ELECTRICAL SYSTEM; AIR BAGS. Airbag Warning Light On or Intermittent. The Occupant Restraint Controller (ORC) May Have The Following DTCs (Active/Stored)
S2508000029 REV.A2026-08-13. Service bulletin. BACK OVER PREVENTION: WARNINGS. Instrument Panel Cluster (IPC) Message “Park Assist System Unavailable” or “Service Park Assist System”, “Rear Braking Assist Unavailable” or “Service Rear Braking Assist System" with Performance Diagnostic Trouble Codes (DTCs)
1138352026-08-13. Service bulletin. ENGINE. COVER - CYLINDER HEAD
1138012026-08-13. Service bulletin. STRUCTURE:BODY. SEAL - LOWER AGS
09-019-262026-08-13. Service bulletin. ENGINE. Potential Engine Oil Overfill Customers may comment on the following: SYMPTOM: ● Misfires or sluggish engine performance. This bulletin involves inspecting the engine oil level and possibly performing an engine oil change.
08-310-262026-08-13. Service bulletin. ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) With Diagnostic Trouble Code (DTC) P0607 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P0607-00 - ECU Internal Performance. Customers may also comment on the following: ● The check engine lamp is illuminated on the Instrument Panel Cluster (IPC) when the vehicle is started.
S268A0000162026-08-06. Service bulletin. ELECTRICAL SYSTEM. R1L Radio Screen Goes Blank after transitioning from logistic to customer mode
08-289-26 REV. A2026-08-06. Service bulletin. POWER TRAIN. Transmission Control Module (TCM) Diagnostic N/A - This bulletin was released in error. SYMPTOM:
1135582026-07-29. Service bulletin. UNKNOWN OR OTHER. EVAPORATOR - AIR CONDITIONING
1135532026-07-29. Service bulletin. UNKNOWN OR OTHER. EVAPORATOR - AIR CONDITIONING
1135542026-07-29. Service bulletin. UNKNOWN OR OTHER. EVAPORATOR - AIR CONDITIONING
1135572026-07-29. Service bulletin. UNKNOWN OR OTHER. EVAPORATOR - AIR CONDITIONING
66D Dealer2026-07-29. Service campaign. ENGINE. Spark Plugs The spark plugs insulator on approximately 48,000 of the above vehicles may break due to excessive cylinder pressure. This pressure can cause the spark plug's ceramic insulator to crack, leading to a rough running engine. If this issue is not resolved promptly, the broken fragments can fall into the cylinder and cause internal engine damage.
08-289-262026-07-29. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Transmission Control Module (TCM) Diagnostic Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following DTCs: ● P2797-00 - Auxiliary Transmission Fluid Pump Performance ● P1625-00 - Park Pawl System Failure NOTE: Park system still functions, no impact to park engagement. NOTE: Vehicle will not experience unintended movement. Customers may also experience one or more of the following: ● Vehicle no start due to battery discharge. ● 'Start/stop inop' message. ● 'Service Transmission' message on in Instrument Panel Cluster (IPC).

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