Flash: Powertrain Control Module (PCM) Updates
Jeep technical service bulletin 1800721REVA for 2021 Jeep Grand Cherokee.
- Bulletin number
- 1800721REVA
- Component
- Electrical system
- Summary
- Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may comment on the following conditions: The RPM gauge in the center cluster is inoperative (International Markets Only). Poor air conditioning performance. Air conditioning compressor will not stop cycling and the evaporator freezes up.
Owners of these vehicles have filed 115 complaints in the electrical category.
Vehicles covered
- Jeep Grand Cherokee 2021 2021
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