Flash: Powertrain Control Module (PCM) Updates
Jeep technical service bulletin 18-057-20 REV. A for 2020 Jeep Wrangler.
- Bulletin number
- 18-057-20 REV. A
- Component
- Power train: automatic transmission: control module (TCM/PCM/tecm)
- Summary
- Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may comment on one or more of the following:Abnormal Engine noise heard periodically. This noise is caused by Variable Valve Timing (VVT) cleaning cycle. A misfire condition with no Malfunction Indicator Lamp (MIL) illumination or Diagnostic Trouble Codes (DTCs) set. In addition, the following software enhancements are available:Updates to include misfire DTCs.
Owners of these vehicles have filed 47 complaints in the transmission category.
Vehicles covered
- Jeep Wrangler 2020 2020
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