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Jeep TSB #21-026-15
2014 Jeep Wrangler
TSB Document:
Affected Component: ELECTRICAL SYSTEM
- Summary
- Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience one or more of the following transmission related concerns. ? Less than desired shift response when towing or driving up steep hills in high ambient temperatures. ? Delayed shift when driving in 4WD Low. ? Vibration or resonance in the cabin on acceleration from a cruising speed.
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