RAM 3500 2025 — technical service bulletin
Bulletin 21-033-25 · NHTSA communication 11019633 · issued Jun 13, 2025
Technical service bulletin
communication type
Power Train
component
2025
model years
1
vehicle entries
Official summary
"Flash: Transmission Control Module (TCM) Updates Customers may comment on one or more of the following: ● Roughness or bumps during gear shifting with heavy load driving on curve maneuvers. ● Secure idle feature does not work when the power panel is on. This bulletin involves reprogramming the TCM with the latest available software."
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.