# Service bulletin 18\-024\-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: 11007660
- Published by NHTSA: 2024\-09\-10
- Manufacturer's number: 18\-024\-24 REV. A
- Manufacturer's date: 2024\-09\-07
- NHTSA component: FUEL/PROPULSION SYSTEM; POWER TRAIN; ENGINE
- Manufacturer's system: Powertrain Control Module, O2 Sensor

## NHTSA's summary

"Flash: Powertrain Control Module \(PCM\) Updates \*\*Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code \(DTC\): ● P2066 \- Fuel Level Sensor 2 Performance. Customers may experience one or more of the following: ● When the driver attempts to override the Electric Park Brake \(EPB\) while it remains engaged due to an unbuckled seatbelt in Drive or Reverse, the high torque request with the park brake engaged may lead to a damaged or broken Rear Drive Unit \(RDU\). ● MIL illuminates when fueling the vehicle while the engine is running. \*\* ● Lower fuel economy reported by the Instrument Panel Cluster \(IPC\). ● Rough engine idle during warm up. ● Vehicle turns off while idling in park. This bulletin involves reprogramming the PCM with the latest available software. ."

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11007660-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11007660-9999.pdf)

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

## Components

Engine, Fuel system, Transmission and driveline

## Trouble codes named

P2066

## Vehicles listed

- 2022 JEEP GRAND CHEROKEE

## Recalls for the same vehicles and component

- [26V413000](/recalls/nhtsa/26V413000.md), 2026-06-30: POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)
- [2023335](/recalls/tc/2023335.md), 2023-06-08: Powertrain
- [23V412000](/recalls/nhtsa/23V412000.md), 2023-06-08: ENGINE
- [2022217](/recalls/tc/2022217.md), 2022-04-28: Engine
- [22V284000](/recalls/nhtsa/22V284000.md), 2022-04-28: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\)

## 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 \(850RE Transmission Only\)
- [9100363 Rev 3](/bulletins/11036762.md), 2026-09-03, Service bulletin: ENGINE. Turbocharger Kit Please note that many turbo components are serviceable separately and full turbo replacement may not be required. If the turbo is being inspected for: Noise/Rattle: Inspect heat shield fasteners for looseness and check the wastegate actuator/linkage for binding. The actuator kit is serviced separately. Oil Leak: Inspect the turbo oil feed O\-ring area for leaks. O\-ring is serviced separately.
- [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
- [9100858](/bulletins/11035066.md), 2026-07-18, Service bulletin: FUEL/PROPULSION SYSTEM. Fuel Delivery Module This GPOP applies to 2021\-2022MY WK \& 2021\-2025MY WD vehicles with extended crank condition due to loss of fuel pressure. Do not replace FDM. Reference TSB 14\-004\-25 REV B. There is a Fuel Pressure Regulator kit to address this issue.
- [9100833 REV1](/bulletins/11035064.md), 2026-07-18, Service bulletin: FUEL/PROPULSION SYSTEM. Fuel Delivery Module Before replacing the fuel module for DTCs P0461 and P062A and other not start, long crank, fuel gauge accuracy and drivability issues, the technician should disconnect the electrical connector at the pump and perform a visual inspection of the connector for and bent, spread, or pushed out terminals. Repair any issues found. Reconnect the plug and perform a push pull push to ensure the connector is fully installed. Then perform 3 keys cycles and listen to hear if the fuel pump is operational. If the fuel pump is heard that indicates that everything is operating correctly. If the pump is heard replacement is not necessary, any replacement will function in the same way.
- [14\-007\-26](/bulletins/11035051.md), 2026-07-18, Service bulletin: FUEL/PROPULSION SYSTEM. Extended Crank Condition Due To Loss of Fuel Pressure Customers may experience the following: SYMPTOM: ● Extended engine crank condition. This bulletin involves performing a fuel pressure test and possibly replacing the fuel pressure regulator.
- [112639](/bulletins/11034912.md), 2026-07-08, Service bulletin: ENGINE. THROTTLE BODY – NONE
- [112640](/bulletins/11034911.md), 2026-07-08, Service bulletin: ENGINE. THROTTLE BODY – NONE
- [9100833](/bulletins/11034342.md), 2026-07-02, Service bulletin: FUEL/PROPULSION SYSTEM. Fuel Delivery Module Before replacing the fuel module for DTCs P0461 and P062A and other not start, long crank, fuel gauge accuracy and drivability issues, the technician should disconnect the electrical connector at the pump and perform a visual inspection of the connector for and bent, spread, or pushed out terminals. Repair any issues found. Reconnect the plug and perform a push pull push to ensure the connector is fully installed. Then perform 3 keys cycles and listen to hear if the fuel pump is operational. If the fuel pump is heard that indicates that everything is operating correctly. If the pump is heard replacement is not necessary, any replacement will function in the same way.

JSON: [/v1/bulletins/11007660](/v1/bulletins/11007660)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2018-024-24%20REV.%20A&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11007660&vehicle=Service%20bulletin%2018-024-24%20REV.%20A)