# Service bulletin 9100220

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: 10244346
- Published by NHTSA: 2023\-10\-30
- Manufacturer's number: 9100220
- Manufacturer's date: 2023\-09\-08
- NHTSA component: POWER TRAIN

## NHTSA's summary

Pan and Filter, Transmission Oil For WL \& JL PHEV transmission leaks inspect for leaks through the transmission case prior to ordering a gasket. Leaks can be caused by possible porosity of transmission case or Oil Cooler Lines.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244346-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244346-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Vehicles listed

- 2022 to 2024 JEEP GRAND CHEROKEE
- 2022 to 2024 JEEP WRANGLER

## Recalls for the same vehicles and component

- [26V413000](/recalls/nhtsa/26V413000.md), 2026-06-30: POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)
- [23V641000](/recalls/nhtsa/23V641000.md), 2023-09-18: POWER TRAIN:MANUAL TRANSMISSION
- [2023335](/recalls/tc/2023335.md), 2023-06-08: Powertrain
- [2023089](/recalls/tc/2023089.md), 2023-02-23: Powertrain
- [23V116000](/recalls/nhtsa/23V116000.md), 2023-02-23: POWER TRAIN:CLUTCH ASSEMBLY
- [2022672](/recalls/tc/2022672.md), 2022-11-23: Powertrain

## Other bulletins for the same vehicles and component

- [S2621000004](/bulletins/11038329.md), 2026-10-07, Service bulletin: POWER TRAIN. 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 \(850RE Transmission Only\)
- [114741](/bulletins/11037596.md), 2026-09-30, Service bulletin: POWER TRAIN. TRANSMISSION KIT \- WITH TORQUE CONVERTER
- [113528](/bulletins/11035187.md), 2026-07-23, Service bulletin: POWER TRAIN. SHAFT \- AXLE HALF
- [113529](/bulletins/11035186.md), 2026-07-23, Service bulletin: POWER TRAIN. SHAFT \- AXLE HALF
- [21\-041\-26 REV. A](/bulletins/11034324.md), 2026-07-02, Service bulletin: POWER TRAIN. 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.
- [18\-008\-26 REV. B](/bulletins/11033946.md), 2026-06-18, Service bulletin: ENGINE; POWER TRAIN. 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 \(DTCs\): ● \*\*P0300 \- Multiple Cylinder Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0301 \- Cylinder 1 Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0302 \- Cylinder 2 Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0303 \- Cylinder 3 Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0304 \- Cylinder 4 Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0305\-00 \- Cylinder 5 Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0306\-00 \- Cylinder 6 Misfire \(Active or Stored status set during cold start catalyst heating\).\*\* ● P08A6 – Gear Lever Position Sensor System – Multiple Sensor Correlation. \(Manual Transmission Only\) ● P152F – Engine Hood Switch 2 / Engine Hood Switch 1 Correlation. Customers may also comment on one or more of the following: ● \*\*The vehicle has a rough idle. ● The engine has a miss. ● Noisy valvetrain.\*\* ● "Service Transmission” message on in the Instrument Panel Cluster \(IPC\) due to clutch slip detection. \(Manual Transmission Only\) NOTE: Customers might experience wheel spin or slippage and the PCM could interpreted the wheel spin or slippage as slipping the clutch too much and to avoid clutch damage, the customer may see the message in the IPC. ● Vehicle is in limp home mode. Other software enhancements included: ● Engine oil pump in high pressure mode with cold engine oil to improve valvetrain component reliability. This bulletin involves reprogramming the PCM with the latest available software.
- [21\-041\-26](/bulletins/11032847.md), 2026-05-20, Service bulletin: POWER TRAIN. 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.
- [18\-051\-26](/bulletins/11031456.md), 2026-04-22, Service bulletin: ENGINE; POWER TRAIN. Flash: Powertrain Control Module \(PCM\) Updates \*\*Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\):\*\* ● \*\*P0300 \- Multiple Cylinder Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0301 \- Cylinder 1 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0302 \- Cylinder 2 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0303 \- Cylinder 3 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0304 \- Cylinder 4 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0305 \- Cylinder 5 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0306 \- Cylinder 6 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P2066 \- Fuel Level Sensor 2 Performance. ● P152F \- Engine Hood Switch 2 / Engine Hood Switch 1 Correlation.\*\* ● C053D \- Brake Pressure Sensor 1 Performance. \*\*Customers may also comment on one or more of the following: ● Check engine illuminates when fueling the vehicle while the engine is running. ● Vehicle has a noticeable misfire. ● Vehicle idles rough. ● Engine noise. NOTE: Noise is heard coming from the valvetrain.\*\* \*\*In addition, the following software enhancement is available: ● Update to prevent customers from driving their vehicles while the Electric Park Brake \(EPB\) is engaged. Engine torque will be limited to prevent the Rear Drive Unit from being damaged. NOTE: Previously, the EPB would remain engaged without any torque limit which could lead to the Rear Drive Unit being damaged/broken.\*\* This bulletin involves reprogramming the PCM with the latest available software.
- [18\-049\-26](/bulletins/11031454.md), 2026-04-22, Service bulletin: ENGINE; POWER TRAIN. Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● \*\*P0300 \- Multiple Cylinder Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0301 \- Cylinder 1 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0302 \- Cylinder 2 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0303 \- Cylinder 3 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0304 \- Cylinder 4 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0305 \- Cylinder 5 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P0306 \- Cylinder 6 Misfire \- In Active or Stored status set during cold start catalyst heating. ● P2066 \- Fuel Level Sensor 2 Performance. ● P152F \- Engine Hood Switch 2 / Engine Hood Switch 1 Correlation.\*\* ● P0401 \- EGR System Performance. ● P00FD \- Battery B State Of Charge Performance. \*\*Customers may also comment on one or more of the following: ● Check engine illuminates when fueling the vehicle while the engine is running. ● Vehicle has a noticeable misfire. ● Vehicle idles rough. ● Engine noise. NOTE: Noise is heard coming from the valvetrain.\*\* In addition, the following software enhancements are available: ● \*\*Update to prevent customers from driving their vehicles while the Electric Park Brake \(EPB\) is engaged. Engine torque will be limited to prevent the Rear Drive Unit from being damaged. NOTE: Previously, the EPB would remain engaged without any torque limit which could lead to the Rear Drive Unit being damaged/broken.\*\* ● Update to enable customers to operate at high state of charge range between 85 to 92%. This bulletin involves reprogramming the PCM with the latest available software.
- [18\-048\-26](/bulletins/11031453.md), 2026-04-22, Service bulletin: POWER TRAIN; ENGINE. Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● P0300 \- Multiple Cylinder Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0301 \- Cylinder 1 Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0302 \- Cylinder 2 Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0303 \- Cylinder 3 Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0304 \- Cylinder 4 Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0305\-00 \- Cylinder 5 Misfire \(Active or Stored status set during cold start catalyst heating\). ● P0306\-00 \- Cylinder 6 Misfire \(Active or Stored status set during cold start catalyst heating\). Customers may also comment on one or more of the following: ● The vehicle has a rough idle. ● The engine has a miss. ● Noisy valvetrain. This bulletin involves reprogramming the PCM with the latest available software.

JSON: [/v1/bulletins/10244346](/v1/bulletins/10244346)

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