Service bulletin 21-041-24 REV. A
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 | 11008751 |
| Published by NHTSA | 2024-10-08 |
| Manufacturer's number | 21-041-24 REV. A |
| Manufacturer's date | 2024-10-04 |
| NHTSA component | POWER TRAIN |
| Manufacturer's system | Transmission Control Module |
NHTSA's summary
"Flash: Transmission Control Module (TCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P1614-00 - ECU Reset/Recovery Occurred.** ● P0810-00 - Clutch Position Control Error. Customers may also comment on one or more of the following: ● **Customer may not continue with rock cycle maneuver due to the wrong message ""Shift To P then Desired Gear"" displayed on the Instrument Panel Cluster (IPC).** ● K0 Adaptation routine runs when vehicle stationary and EV Mode. ● Vehicle loses propulsion capability. ● Service transmission warning indicator is on. NOTE: Requires key cycle to recover. This bulletin involves reprogramming the TCM with the latest available software."
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
Transmission and driveline
Trouble codes named
P0810, P1614
| JEEP GRAND CHEROKEE | 2024 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 26V413000 | 2026-06-30. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL) |
|---|
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| S2621000004 | 2026-10-07. Service bulletin. 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) |
|---|---|
| 113528 | 2026-07-23. Service bulletin. SHAFT - AXLE HALF |
| 113529 | 2026-07-23. Service bulletin. SHAFT - AXLE HALF |
| 21-041-26 REV. A | 2026-07-02. Service bulletin. Transmission Auxiliary Oil Pump Failure Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set **one or more the following Diagnostic Troubles Code (DTCs): ● U0287-00 - Lost Communication With Transmission Fluid Pump Module 1.** ● P0B0D-00 - Electric/Auxiliary Transmission Fluid Pump Motor Control Module. Customers may also comment on the following: ● Vehicle is in limp mode. This bulletin involves replacing the transmission oil pump. |
| 21-041-26 | 2026-05-20. Service bulletin. Transmission Auxiliary Oil Pump Failure Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P0B0D-00 - Electric/Auxiliary Transmission Fluid Pump Motor Control Module. Customers may also comment on the following: ● Vehicle is in limp mode This bulletin involves replacing the transmission oil pump. |
| S2621000003 REV.A | 2026-03-18. Service bulletin. The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV, 8HP75-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13. |
| S2621000003 | 2026-03-05. Service bulletin. Service transmission/check engine warning indicator for the 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV transmissions that have fault codes P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13. |
| S2521000004 REV.B | 2026-01-21. Service bulletin. The customer is experiencing a clicking or pop noise from the steering knuckle and bearing area during turns while driving. |
| 109161 | 2025-12-23. Service bulletin. SWITCH - TRANSFER CASE, RIDE HEIGHT, TERRAIN SELECT |
| 109011 | 2025-12-23. Service bulletin. VALVE BODY & CONTROL UNIT – TRANSMISSION |