Jeep Grand Cherokee Service Bulletins (2026)
276 manufacturer communications on file.
- August 5, 2026•Document ID: 11036172Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- 113835
- Date Added:
- August 13, 2026
- Manufacturer:
- JEEP
SummaryCOVER - CYLINDER HEAD
Associated Products (4)Associated Documents - August 5, 2026•Document ID: 11036158Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- 09-017-26
- Date Added:
- August 13, 2026
- Manufacturer:
- JEEP
SummaryUmbrella 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
Associated Products (2)Associated Documents - August 4, 2026•Document ID: 11036180Service Bulletin/Repair InstructionsBACK OVER PREVENTION: WARNINGS
- Mfr Comm. #:
- S2508000029 REV.A
- Date Added:
- August 13, 2026
- Manufacturer:
- JEEP
SummaryInstrument 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)
Associated Products (18)2027 Jeep Grand Cherokee2027 Jeep Grand Cherokee L2027 Jeep Grand Wagoneer2026 Jeep Grand Cherokee2026 Jeep Grand Cherokee L2026 Jeep Grand Wagoneer2025 Jeep Grand Cherokee2025 Jeep Grand Cherokee L2025 Jeep Grand Wagoneer2025 Jeep Wagoneer2024 Jeep Grand Cherokee2024 Jeep Grand Cherokee L2024 Jeep Grand Wagoneer2024 Jeep Wagoneer2023 Jeep Grand Cherokee2023 Jeep Grand Cherokee L2023 Jeep Grand Wagoneer2023 Jeep WagoneerAssociated Documents - August 3, 2026•Document ID: 11036170Service Bulletin/Repair InstructionsSTRUCTURE:BODY
- Mfr Comm. #:
- 113801
- Date Added:
- August 13, 2026
- Manufacturer:
- JEEP
SummarySEAL - LOWER AGS
Associated Products (10)Associated Documents - July 31, 2026•Document ID: 11035996Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- S268A000016
- Date Added:
- August 6, 2026
- Manufacturer:
- JEEP
SummaryR1L Radio Screen Goes Blank after transitioning from logistic to customer mode
Associated Products (12)Associated Documents - July 30, 2026•Document ID: 11035971Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- 08-289-26 REV. A
- Date Added:
- August 6, 2026
- Manufacturer:
- DODGE
SummaryTransmission Control Module (TCM) Diagnostic N/A - This bulletin was released in error. SYMPTOM:
Associated Products (5)Associated Documents - July 27, 2026•Document ID: 11036780Warranty Program/ExtensionENGINE
- Mfr Comm. #:
- 66D Combo Rev1
- Date Added:
- September 3, 2026
- Manufacturer:
- JEEP
SummaryCUSTOMER SATISFACTION NOTIFICATION NORTH AMERICA Spark Plugs Reference: 66D 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.
Associated Products (4)Associated Documents - July 22, 2026•Document ID: 11035327Service CampaignENGINE
- Mfr Comm. #:
- 66D Dealer
- Date Added:
- July 29, 2026
- Manufacturer:
- JEEP
SummarySpark 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.
Associated Products (2)Associated Documents - July 22, 2026•Document ID: 11035313Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; POWER TRAIN
- Mfr Comm. #:
- 08-289-26
- Date Added:
- July 29, 2026
- Manufacturer:
- JEEP
SummaryTransmission 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).
Associated Products (4)Associated Documents - July 20, 2026•Document ID: 11035333Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- 113558
- Date Added:
- July 29, 2026
- Manufacturer:
- JEEP
SummaryEVAPORATOR - AIR CONDITIONING
Associated Products (10)Associated Documents - July 20, 2026•Document ID: 11035330Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- 113553
- Date Added:
- July 29, 2026
- Manufacturer:
- JEEP
SummaryEVAPORATOR - AIR CONDITIONING
Associated Products (10)Associated Documents - July 20, 2026•Document ID: 11035329Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- 113554
- Date Added:
- July 29, 2026
- Manufacturer:
- JEEP
SummaryEVAPORATOR - AIR CONDITIONING
Associated Products (10)Associated Documents - July 20, 2026•Document ID: 11035328Service Bulletin/Repair InstructionsUNKNOWN OR OTHER
- Mfr Comm. #:
- 113557
- Date Added:
- July 29, 2026
- Manufacturer:
- JEEP
SummaryEVAPORATOR - AIR CONDITIONING
Associated Products (10)Associated Documents - July 17, 2026•Document ID: 11035178Service Bulletin/Repair InstructionsSTRUCTURE:BODY
- Mfr Comm. #:
- 23-027-26 REV. A
- Date Added:
- July 23, 2026
- Manufacturer:
- JEEP
SummarySunroof Shade Binding Customers may experience the following: SYMPTOM: ● The sunroof sunshade is binding or sticking while opening or closing the sunshade. NOTE: Some second row microphone harness connector foam pads may be catching on the sunroof sunshade track causing this condition. This bulletin involves inspecting the second row microphone harness connector foam pad and possibly repositioning the foam pad
Associated Products (2)Associated Documents - July 15, 2026•Document ID: 11035177Service Bulletin/Repair InstructionsSTRUCTURE:BODY
- Mfr Comm. #:
- 23-027-26
- Date Added:
- July 23, 2026
- Manufacturer:
- JEEP
SummarySunroof Shade Binding Customers may experience the following: SYMPTOM: ● The sunroof sunshade is binding or sticking while opening or closing the sunshade. NOTE: Some second row microphone harness connector foam pads may be catching on the sunroof sunshade track causing this condition. This bulletin involves inspecting the second row microphone harness connector foam pad and possibly repositioning the foam pad
Associated Products (2)Associated Documents - July 15, 2026•Document ID: 11035172Service Bulletin/Repair InstructionsENGINE; FUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- 09-014-26
- Date Added:
- July 23, 2026
- Manufacturer:
- JEEP
SummaryNot applicable to vehicles built for US market. Engine Runs Rough Customers may comment on the following: SYMPTOM: ● Engine runs rough. This bulletin involves filling the fuel tank with premium fuel (95 RON minimum) during the Pre-Delivery Inspection PDI process.
Associated Products (2)Associated Documents - July 15, 2026•Document ID: 11035165Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- 08-279-26
- Date Added:
- July 23, 2026
- Manufacturer:
- JEEP
SummaryFlash: Heating, Ventilation And Cooling (HVAC) Module Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● B1148-2A - Left Rear Heated Seat Switch - Stuck. Customers may also comment on one or more of the following: ● Rear heated/vented seats stop working. ● The rear heated/vented seat button is not illuminating. This bulletin involves reprogramming the HVAC module with the latest software.
Associated Products (2)Associated Documents - July 10, 2026•Document ID: 11035072Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; STRUCTURE:BODY
- Mfr Comm. #:
- 9100859
- Date Added:
- July 18, 2026
- Manufacturer:
- JEEP
SummaryBefore replacing any part, check the DOT on the glass or the PN to make sure you choose the replacement part from the correct supplier: DOT 615 - 6NC10TRMAH - CIE Supplier DOT 1038 - 6NC07TRMAR - CIE Supplier DOT 1065 - 7TF32TRMAB, 7TF33TRMAB - HCMF Supplier
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- Mfr Comm. #:
- 09-013-26
- Date Added:
- July 18, 2026
- Manufacturer:
- JEEP
SummaryEngine Runs Rough Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● 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. Customers may also comment on the following: ● Engine runs rough. This bulletin involves replacing all four main chamber spark plugs.
Associated Products (2)Associated Documents - July 9, 2026•Document ID: 11035082Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- 113241
- Date Added:
- July 18, 2026
- Manufacturer:
- JEEP
SummarySPARK PLUG - NONE
Associated Products (8)Associated Documents