RAM 1500 2022 — technical service bulletin
Bulletin 21-034-22 · NHTSA communication 10229788 · issued Dec 2, 2022
Technical service bulletin
communication type
Exterior Lighting
component
2022
model years
1
vehicle entries
Official 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. Uponfurther investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set: P0735 - Gear 5 Shift Incorrect Ratio. Customers may comment on one or more of the following: Low speed tip in bumps/hesitation. Low speed coast down bump in tow/haul mode. The following enhancement is also available: Low speed coast down throttle improvements during hot/cold conditi
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.