Jeep Grand Cherokee 2023 — technical service bulletin
Bulletin 18-001-24 REV. C · NHTSA communication 11007658 · issued Sep 7, 2024
Technical service bulletin
communication type
Fuel/propulsion System
component
2023
model years
1
vehicle entries
Official summary
"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● **P0629 - Fuel Pump Control Circuit High. ● P0171 - Fuel system Lean. ● P0087 - Fuel Rail Pressure Too Low - Bank 1.** ● P16F0-00 - SPI Comm Hardware Fault. Customers may also experience one or more of the following: ● **The rear half shafts are damaged due to pressing the accelerator in drive with the Electric Parking Brake (EPB) applied. ● The
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.