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Jeep TSB #21-005-15 REVA
2014 Jeep Grand Cherokee
Affected Component: ELECTRICAL SYSTEM
- Summary
- Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) and Transmission Control Module (TCM) with new software. NOTE: Both the PCM and TCM must be up to date for these changes to be effective.