RAM 1500 2026 — technical service bulletin
Bulletin 21-044-26 · NHTSA communication 11033341 · issued May 30, 2026
Technical service bulletin
communication type
Power Train
component
2026
model years
1
vehicle entries
Official summary
Flash: Transmission Control Module (TCM) Updates Customers may experience one or more of the following: ● 3-2 shift coastdown bumps when coming to a stop. ● 3-2 shift coastdown tip-in bumps when coming to a stop and applying the accelerator pedal before coming to a complete stop. ● Poor upshift quality while driving normally 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.