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Ram TSB #21-033-20
2019 Ram 1500
TSB Document:
Affected Component: ELECTRICAL SYSTEM
- Summary
- Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs have been set:P1DDE-00 - Ignition Run-Start Input 1-2 Correlation. P1DF3-00 - ECU Not Initialized. P07E4-00 - Unable To Engage Park. P0735-00 - Gear 5 Shift Incorrect Ratio. The following enhancement is included in this software update:Improvement to the 5-3-2 downshift to prevent DTC P0735-00. Shifter auto-position correction with ignition in RUN/ACC positions during an AutoPark event.
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