Service bulletins for the 2023 Jeep Grand Wagoneer
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.
552 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Manual transmission are shown. Show all
| 1800324 | 2024-03-18. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? **P00C6 - Fuel Rail Pressure Too Low - Engine Cranking Bank 1. ? P06DD - Engine Oil Pressure Control Circuit Performance/Stuck Off. ? P0461 - Fuel Level Sensor "A" Circuit Range/Performance.** ? P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected. ? P0604-00 - Internal Control Module Random Access Memory Ram Error. ? P060C-00 - Internal Control Module Main Processor Performance. This bulletin involves reprogramming the PCM with the latest available software. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.