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Service bulletins for the 2027 Jeep Grand Cherokee

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.

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

Warranty extensions
1149372026-10-07. STRUCTURE:BODY. Warranty Newsletter – Volume 12, Issue 7
1149462026-10-07. STRUCTURE:BODY. FCA Caribbean Warranty Newsletter – Volume 12, Issue 7
66D Combo Rev12026-09-03. ENGINE. CUSTOMER 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.
1142732026-09-03. ENGINE. D-26-18 Rev. A Dealer Incentive for the Completion of Customer Satisfaction Notification 66D
1142752026-09-03. ENGINE. ID-26-38 Rev. A Dealer Incentive for the Completion of Customer Satisfaction Notification 66D
1142382026-09-03. ENGINE. Dealer Incentive for the Completion of Customer Satisfaction Notice (CSN) 66D
1142362026-09-03. ENGINE. Dealer Incentive for the Completion of Customer Satisfaction Notice (CSN) 66D
1125352026-06-03. ENGINE. Claim Submission for Hurricane Spark Plug Repair
1125522026-06-03. ENGINE. D-26-13 Rev. A Claim Submission for Hurricane Spark Plug Repair

A warranty extension may pay for a repair after the basic warranty has ended. Read the document for which vehicles and which repair it covers.

By type

By component

By trouble code

Bulletins, newest first
66D Combo Rev22026-10-16. Service campaign. ENGINE. Revised Customer Satisfaction Notification 66D – Spark Plugs - Dealer Notification
08-374-262026-10-16. Service bulletin. ELECTRICAL SYSTEM. R1H U43.17 Software Update - FOTA Customers may experience the following: SYMPTOM: ● CarPlay® application crash. ● Intermittent CarPlay® connection or extended connection time. ● Apple CarPlay® radio lagging, freezing or display glitches. ● Audio intermittently cuts out. ● Radio display blank. ● Intermittent Android Auto® / CarPlay® reconnection concern. ● Abnormal radio screen display when adjusting audio volume using the steering wheel controls after extended Bluetooth audio playback from an Android device. ● Unable to add or pair a device to the Head Unit (HU) while the vehicle is in motion. ● Bluetooth-enabled devices cannot be discovered when attempting to pair a phone, even when the device is inside the vehicle. ● Turn Signal Activated Blind Spot View activates slower when the left turn signal is used compared to the right turn signal. ● Android Auto® launches automatically with a blank screen. ● Radio display goes blank while audio continues to play, and radio functions become inoperative. ● Vehicle Settings page becomes unresponsive or frozen. ● Android Auto® fails to connect. ● FamCAM softkey requires multiple presses before launching. ● Radio resets or reboots while driving. ● Flashing odometer. ● Selectable Tire Fill Assist application displays an illegible "Save as Preset" softkey. ● Surround View Camera (SVC) guidelines remain displayed after the guidelines setting has been turned OFF through the radio. In addition, the following software enhancement is included: ● Improved Wi-Fi connectivity performance.
66D Combo Rev22026-10-16. Service campaign. ENGINE. Revised Customer Satisfaction Notification 66D – Spark Plugs - Dealer Notification
08-374-262026-10-16. Service bulletin. ELECTRICAL SYSTEM. R1H U43.17 Software Update - FOTA Customers may experience the following: SYMPTOM: ● CarPlay® application crash. ● Intermittent CarPlay® connection or extended connection time. ● Apple CarPlay® radio lagging, freezing or display glitches. ● Audio intermittently cuts out. ● Radio display blank. ● Intermittent Android Auto® / CarPlay® reconnection concern. ● Abnormal radio screen display when adjusting audio volume using the steering wheel controls after extended Bluetooth audio playback from an Android device. ● Unable to add or pair a device to the Head Unit (HU) while the vehicle is in motion. ● Bluetooth-enabled devices cannot be discovered when attempting to pair a phone, even when the device is inside the vehicle. ● Turn Signal Activated Blind Spot View activates slower when the left turn signal is used compared to the right turn signal. ● Android Auto® launches automatically with a blank screen. ● Radio display goes blank while audio continues to play, and radio functions become inoperative. ● Vehicle Settings page becomes unresponsive or frozen. ● Android Auto® fails to connect. ● FamCAM softkey requires multiple presses before launching. ● Radio resets or reboots while driving. ● Flashing odometer. ● Selectable Tire Fill Assist application displays an illegible "Save as Preset" softkey. ● Surround View Camera (SVC) guidelines remain displayed after the guidelines setting has been turned OFF through the radio. In addition, the following software enhancement is included: ● Improved Wi-Fi connectivity performance.
S26210000042026-10-07. Service bulletin. POWER TRAIN. The Customer May Complain About a Popping Noise, Grinding Noise, or an Intermittent No Reverse or Forward Transmission Engagement. The Tech May Find Damaged and/or Worn Transmission Output Shaft Splines (850RE Transmission Only)
1149372026-10-07. Warranty extension. STRUCTURE:BODY. Warranty Newsletter – Volume 12, Issue 7
1149462026-10-07. Warranty extension. STRUCTURE:BODY. FCA Caribbean Warranty Newsletter – Volume 12, Issue 7
91009262026-10-07. Service bulletin. ELECTRICAL SYSTEM. WIRELESS CHARGER Welcome GREEN LED not turning ON after multiple IGN ON/OFF without sleep cycle and no phone on the charging pads. Part numbers affected: 68630089AA 68630088AB 68649038AA Welcome Green LED turns on for 1 second after multiple IGN ON/OFF without sleep cycle and no phone on the charging pad. Intent of this condition is to notify the customer/dealership that the Wireless Charging Pad is ready to charge. Do not report as warranty claim, no impact to wireless charger functionality. Part numbers affected: 68630089AB 68630088AD 68649038AB Advice to dealership: Do no replace wireless charger PNs 68630089AA,68630088AB,68649038AA if no Welcome GREEN LED is seen after multiple IGN ON/OFF without sleep cycle and no phone on the charging pads. This feature is available in the successor NIKs, no impact to wireless charger functionality.
09-023-262026-09-30. Service bulletin. ENGINE. Umbrella Valve Seal Missing From Cylinder Head Cover 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.
OTHERDOC_1832026-09-17. Other. ELECTRICAL SYSTEM. Radio Over The Air Update to U43.17 R1H Software Version (FOTA) Customers may experience one or more of the following: - Navigation Stability - Android Auto & Carplay stability & connectivity - Power management app - Distorted/glitchy display prior to start‑up animation - Text appearance display - Widget incorrect display - Turn signal blind spot response timing - Audio cut out - Drive Modes selection - Park assist Guidelines selction
S2623000052 REV. A2026-09-10. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM. Airbag Warning Light On or Intermittent. The Occupant Restraint Controller (ORC) May Have The Following DTCs (Active/Stored)
66D Combo Rev12026-09-03. Warranty extension. ENGINE. CUSTOMER 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.
1142732026-09-03. Warranty extension. ENGINE. D-26-18 Rev. A Dealer Incentive for the Completion of Customer Satisfaction Notification 66D
1142752026-09-03. Warranty extension. ENGINE. ID-26-38 Rev. A Dealer Incentive for the Completion of Customer Satisfaction Notification 66D
1142382026-09-03. Warranty extension. ENGINE. Dealer Incentive for the Completion of Customer Satisfaction Notice (CSN) 66D
1142362026-09-03. Warranty extension. ENGINE. Dealer Incentive for the Completion of Customer Satisfaction Notice (CSN) 66D
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.
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)
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)
91008592026-07-18. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. Before 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
9100833 REV12026-07-18. Service bulletin. FUEL/PROPULSION SYSTEM. Fuel Delivery Module Before replacing the fuel module for DTCs P0461 and P062A and other not start, long crank, fuel gauge accuracy and drivability issues, the technician should disconnect the electrical connector at the pump and perform a visual inspection of the connector for and bent, spread, or pushed out terminals. Repair any issues found. Reconnect the plug and perform a push pull push to ensure the connector is fully installed. Then perform 3 keys cycles and listen to hear if the fuel pump is operational. If the fuel pump is heard that indicates that everything is operating correctly. If the pump is heard replacement is not necessary, any replacement will function in the same way.
91008332026-07-02. Service bulletin. FUEL/PROPULSION SYSTEM. Fuel Delivery Module Before replacing the fuel module for DTCs P0461 and P062A and other not start, long crank, fuel gauge accuracy and drivability issues, the technician should disconnect the electrical connector at the pump and perform a visual inspection of the connector for and bent, spread, or pushed out terminals. Repair any issues found. Reconnect the plug and perform a push pull push to ensure the connector is fully installed. Then perform 3 keys cycles and listen to hear if the fuel pump is operational. If the fuel pump is heard that indicates that everything is operating correctly. If the pump is heard replacement is not necessary, any replacement will function in the same way.

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