Flash: Transmission Control Module (TCM) Updates Customers may also experience one or more of the...
Ram technical service bulletin 21-010-26 for 2026 Ram 3500.
- Bulletin number
- 21-010-26
- Component
- Power train
- Summary
- Flash: Transmission Control Module (TCM) Updates Customers may also experience one or more of the following: ● Customer is unable to switch the ignition to OFF when in Park gear. ● After shifting into Park, the Instrument Panel Cluster (IPC) will display that the transmission is in Neutral. NOTE: The transmission will actually be in Park and able to hold the vehicle, but the cluster display would indicate Neutral, preventing the engine from shutting off. This bulletin involves inspecting and possibly reprogramming the TCM with the latest available software.
Owners of these vehicles have filed 5 complaints in the transmission category.
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