Service bulletin 1800721REVA
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 | 10221324 |
| Published by NHTSA | 2022-09-26 |
| Manufacturer's number | 1800721REVA |
| Manufacturer's date | 2021-06-05 |
| NHTSA component | POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM |
NHTSA's summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may comment on the following conditions: The RPM gauge in the center cluster is inoperative (International Markets Only). Poor air conditioning performance. Air conditioning compressor will not stop cycling and the evaporator freezes up.
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 | 2021 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 1810723 | 2024-01-16. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P0171 - Fuel System 1/1 Lean. ? P0174 - Fuel System 2/1 Lean. This bulletin involves reprogramming the PCM with the latest available software. |
|---|---|
| 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: |
| S2121000014 | 2022-09-26. Service bulletin. Service 4WD Message Illuminated. Diagnostic Trouble Code (DTC) C1472-92 ? Transfer Case Clutch Control ? Performance or Incorrect Operation. |
| 18-062-21 | 2022-08-22. 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 Diagnostic Trouble Code (DTC) has been set: P032F - Combustion Engine Producing Insufficient Torque. |
| 21-027-21 | 2022-08-22. Service bulletin. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set: P032F - Combustion Engine Producing Insufficient Torque. Customers may also experience a shift quality issue during a 5-4 downshift. |
| 18-004-22 | 2022-06-27. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software.The PCM software update is also being released as a generic release to support PCM replacement only in service (North America only). This software enables the following functions: Active Vehicle Speed Limiters (AVSL)(EMEA only). Intelligent Speed Assist (ISA)(EMEA only). |
| 18-092-22 | 2022-06-27. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software.The PCM software update is being released as a generic release to support PCM replacement only in service. |
| 1800721 | 2022-05-31. Service bulletin. Flash: Powertrain Control Module PCM Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may comment on the following conditions: The RPM gauge in the center cluster is inoperative International Markets Only. Poor air conditioning performance. Air conditioning compressor will not stop cycling and the evaporator freezes up. |
| 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: |
| 18-062-21 REV. A | 2021-12-13. 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 Diagnostic Trouble Code (DTC) has been set:P032F - Combustion Engine Producing Insufficient Torque. |