Service bulletin 21-036-19
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10168475 |
| Published by NHTSA | 2019-12-02 |
| Manufacturer's number | 21-036-19 |
| Manufacturer's date | 2019-10-23 |
| NHTSA component | ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM) |
NHTSA's summary
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 document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system, Transmission and driveline, Automatic transmission, Transmission control module
| JEEP GRAND CHEROKEE | 2020 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| S1808000152 | 2023-04-17. Service bulletin. CEL (Check Engine Lamp) Illuminates, Recent PCM Replace or Flash Update Performed, Diagnostic Trouble Codes (DTCs) P057B Brake Pedal Position Sensor Circuit Performance, P1572 Brake Pedal Stuck, C0042-54 Brake Pedal Missing Calibration |
|---|---|
| 2103322 | 2023-01-23. Service bulletin. Transmission Control Module (TCM) Updates |
| 2102622 | 2022-10-31. Service bulletin. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may notice the following condition:Poor coast down quality (bump/clunk) at approximately 16-32 kph (10-20 mph) range in manual mode. |
| S2125000002 | 2022-09-26. Service bulletin. Customer complaint includes a Mil-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM: |
| S2125000002 | 2022-05-31. Service bulletin. Customer complaint includes a Mil-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM: |
| 18-079-20 REV. A | 2020-12-28. Service bulletin. 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. A | 2020-12-21. Service bulletin. 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. |
| 18-092-20 | 2020-11-30. Service bulletin. 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. |
| 18-091-20 | 2020-10-26. Service bulletin. 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. |
| 18-079-20 | 2020-10-26. Service bulletin. 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. |