Jeep Grand Cherokee 2025 — technical service bulletin
Bulletin 18-079-25 · NHTSA communication 11022166 · issued Aug 21, 2025
Technical service bulletin
communication type
Electrical System
component
2025
model years
3
vehicle entries
Official 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): ● P24B9 - Evap System Leak Detection Pump Pressure Sensor Circuit Range/Performance. ● P1CEA - Boost Side Evap Purge System Performance. Customers may experience the following: ● Check Engine warning lamp on in the Instrument Panel Cluster (IPC). This bulletin involves reprogramming the PCM with the latest available software.
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.