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Service bulletins for the 2020 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.

535 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
90037302022-09-15. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; WHEELS. SI-eVT Transmission - China Variant & 9 inertia ring bolts For SI-eVT Transmission ONLY: Replace the nine (9) flywheel to damper bolts (68382486AA) when replacing the SI-eVT per TechConnect procedure. SI-eVTs built prior to January 11, 2019 had a 05192374AB level cooler. Using service SI-evT built after Jan 11 2019 with the 05192374AC level cooler requires new 68238385AB inlet hose and 68238386AC outlet hose. The service SI-eVT is shipped with a non-China wiring harness (68241331AC). China market replacement must replace wiring harness with 68368596AA. The China variant 68368596AA wiring harness has an interlock to the electrical charge door.
S21250000022022-05-31. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Customer complaint includes a Mil-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
S2008000113 Rev.2021-05-24. Service bulletin. POWER TRAIN. No Start Intermittently, Vehicle Requires Multiple Keyless Push To Start Attempts To Start Vehicle, Intermittent Key Not Detected Message
18-026-212021-04-26. Service bulletin. POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may notice the following condition:The oil change interval is too short. The oil change message shows up at around 12,000 km / 7,456 mi or earlier and the normal oil change interval is 12 months or 20,000 km / 12,427 mi.
18-079-20 REV. A2020-12-28. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates - AN-K8-18-20201102 Refer to China Joint Venture (JV) released document AN-K8-18-20201102, for details on this service action.
18-079-20 REV. A2020-12-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. Flash: Powertrain Control Module (PCM) Updates - AN-K8-18-20201102 Refer to China Joint Venture (JV) released document AN-K8-18-20201102, for details on this service action.
08-092-202020-11-30. Service bulletin. STEERING; EQUIPMENT; POWER TRAIN. Improper Up Shift With Paddle Shift This bulletin involves replacing both steering wheel paddle shifter. Customers may experience the following:When trying to upshift using the paddle shifter on the steering, the transmission will downshift instead.
18-092-202020-11-30. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following (DTC) has been set:P00FD-00 - Battery B State Of Charge Performance.
08-087-202020-10-26. Service bulletin. POWER TRAIN. Flash: Power Inverter Module (PIM) Updates - AN-K8PHEV-18-20200927 Refer to China Joint Venture (JV) released document AN-K8PHEV-18-20200927, for details on this service action.
18-091-202020-10-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates - AN-K8PHEV-18-20200926 Refer to China Joint Venture (JV) released document AN-K8PHEV-18-20200926, for details on this service action.
18-079-202020-10-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Flash: Powertrain Control Module (PCM) Updates - AN-K8-18-20200824 Refer to China Joint Venture (JV) released document AN-K8-18-20200824, for details on this service action.
S20080001042020-08-24. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); SERVICE BRAKES. During A WiTech Session The ABS And Traction Control Lights Turn On. Multiple ABS And PCM DTC?s Set
S20080000752020-07-27. Service bulletin. POWER TRAIN. No Start, Start Stop Inoperative, Cluster Messages to Service Shifter or Service Start Stop System
18-041-202020-05-26. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Powertrain Control Module (PCM) Replacement - P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) This bulletin involves replacing the Powertrain Control Module (PCM) and re-programming with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find the following Diagnostic Trouble Code (DTC) set in the PCM memory:P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation).
21-019-202020-05-26. Service bulletin. BACK OVER PREVENTION; POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may notice one or more of the following conditions:A loud whistle noise upon engine start up. Rough and/or erratic transmission shifting between gears during normal drive cycles.
21-019-202020-05-18. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may notice one or more of the following conditions:A loud whistle noise upon engine start up. Rough and/or erratic transmission shifting between gears during normal drive cycles.
21-019-202020-04-27. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may notice one or more of the following conditions:A loud whistle noise upon engine start up. Rough and/or erratic transmission shifting between gears during normal drive cycles.
21-038-192019-12-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience one or both of the following conditions:Poor shift quality or ?bump? experienced during 3-2, 2-1 coastdowns.
18-074-192019-12-02. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may comment on the following condition: Perceive rough and/or erratic transmission shifting between gears during normal drive cycles.
21-036-192019-12-02. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may notice the following condition: Rough and/or erratic transmission shifting between gears during normal drive cycles.

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