Service bulletin 9003704
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 | 10178612 |
| Published by NHTSA | 2020-08-24 |
| Manufacturer's number | 9003704 |
| Manufacturer's date | 2020-07-22 |
| NHTSA component | EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; POWER TRAIN |
NHTSA's summary
Transmission Oil Pan, Heater (TMU), Tube or O-ring Applies to vehicles equipped with 8 speed transmissions only; if you have a leak that appears to be at the pan the use of proper leak detection is recommended. The fluid in the 8 speeds can be detected with a black light and there are aftermarket spray on leak detection materials to help ensure that the leak is properly diagnosed and not from another location such as cooler lines, heater tubes, or case porosity. Please note that the transmission pan gasket is available for many of the 8 speed applications FCA offers. Please review the available quick connect and transfer tube parts, as replacement of the TMU may not be required. If a TOC line connection is found to be the source, the quick connect may need replacement. If the leak source is coming from the connection of the TMU to the transmission, the transfer tube may need replacement. When parts are returned to the QEC the retaining clips (snap ring) for the quick disconnect fittings are missing. (This leaves a question as to whether the clips were missing from the assembly plant, or the technician removed them in order to make line removal easier.) Please return the clips with the transmission heater and note if they were not there to begin with. For any questions regarding transmission heater, contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
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
Equipment and accessories, Transmission and driveline
| CHRYSLER 300 | 2014, 2015, 2016 |
|---|---|
| DODGE CHALLENGER | 2014, 2015, 2016, 2017, 2018, 2019 |
| DODGE CHARGER | 2014, 2015, 2016, 2017, 2018, 2019 |
| DODGE DURANGO | 2014, 2015, 2016, 2017, 2018, 2019 |
| JEEP GRAND CHEROKEE | 2014, 2015, 2016, 2017, 2018, 2019 |
| JEEP WRANGLER | 2018, 2019 |
| RAM 1500 | 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 2023089 | 2023-02-23. Powertrain |
|---|---|
| 23V116000 | 2023-02-23. POWER TRAIN:CLUTCH ASSEMBLY |
| 2021035 | 2021-01-28. Powertrain |
| 21V028000 | 2021-01-28. POWER TRAIN:CLUTCH ASSEMBLY |
| 2020401 | 2020-08-28. Powertrain |
| 2020132 | 2020-03-27. Powertrain |
| 20V183000 | 2020-03-26. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT |
| 2020083 | 2020-03-03. Powertrain |
| 20V124000 | 2020-03-03. POWER TRAIN:CLUTCH ASSEMBLY |
| 20V080000 | 2020-02-13. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE) |
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) |
|---|---|
| 114738 | 2026-09-30. Service bulletin. TRANSMISSION KIT - WITH TORQUE CONVERTER |
| 114737 | 2026-09-30. Service bulletin. TRANSMISSION KIT - WITH TORQUE CONVERTER |
| 18-062-26 | 2026-07-02. Service bulletin. Flash: Powertrain Control Module (PCM) 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): ● **P0420 - Catalyst System Efficiency Below Threshold Bank 1. ● P0430 - Catalyst System Efficiency Below Threshold Bank 2.** ● P0456 - EVAP System Small Leak. Customers may also comment on one or more of the following: ● **Vehicle fails emissions inspection testing.** ● Pinging/detonation sound from the engine after warm up at 1000-1500 RPM at low speed. (EMEA and APAC Only). ● The vehicle stalls at low speeds and/or coming to a stop This bulletin involves reprogramming the PCM with the latest available software. |
| S2623000023 | 2026-04-15. Service bulletin. Power Liftgate Inoperative. |
| 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. |
| 18-001-26 | 2026-01-21. Service bulletin. Flash: Powertrain Control Module (PCM) 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): ● P0420 - Catalyst System Efficiency Below Threshold Bank 1. ● P0430 - Catalyst System Efficiency Below Threshold Bank 2. Customers may also experience the following: ● Catalyst damage and restricted exhaust flow, resulting in a reduction of engine power. This bulletin involves reprogramming the PCM with the latest available software. |
| 21-009-26 | 2026-01-14. Service bulletin. Flash: Transmission Control Module (TCM) Updates *Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● P0979-00 - Shift Solenoid 3 Control Circuit Low. ● P0219-00 - Engine Overspeed Condition. ● P0731-00 - Gear 1 Shift Incorrect Ratio. **Customers may experience the following: ● Shift shudder and shift shock during wide open throttle, high clutch energy shift.** The following software update is also included: ● Improved high RPM in coasting situations for the 1-2 shift This bulletin involves reprogramming the TCM with the latest available software. |
| 03-008-25 | 2025-09-24. Service bulletin. Rear Axle Vibration Shudder Or Chatter Customers may experience the following: ● A chatter, shudder, or vibration from the rear axle during turns. NOTE: This may happen more as the vehicle ages, especially if the vehicle is used extensively for towing or hauling heavy loads. The cause of the concern may be due to degradation of the rear axle fluid. It is very important to follow the routine maintenance schedules on these vehicles when it comes to changing the rear axle fluid if the vehicle is used primarily for towing or hauling heavy loads. If you experience a vehicle with the above condition, please perform the proper maintenance procedures for the rear axle and replace the fluid first before replacing any hardware components. NOTE: This service bulletin is only applicable to vehicles that have no history of an axle fluid replacement. If the vehicle usage includes police, taxi, fleet, off-road or frequent trailer towing, regular axle fluid changes are required every 3 years or 30,000 miles (whichever comes first) per the Maintenance Schedule in the vehicle Owner's Manual. This bulletin involves changing the rear axle lube to possibly address a chatter, shudder or vibration. |