Flash: Transmission Control Module (TCM) Updates
Jeep technical service bulletin 21-034-20 for 2020 Jeep Gladiator.
- Bulletin number
- 21-034-20
- Component
- Electrical system
- Summary
- Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience the following condition:A loud whistle noise upon engine start up.
Owners of these vehicles have filed 183 complaints in the electrical category.
Vehicles covered
- Jeep Gladiator 2020 2020
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