RAM 2500 2026 — technical service bulletin
Bulletin 21-017-26 · NHTSA communication 11029681 · issued Feb 19, 2026
Technical service bulletin
communication type
Power Train
component
2026
model years
4
vehicle entries
Official summary
Flash: Transmission Control Module (TCM) Updates Customers may comment on the following: SYMPTOM: ● Hesitation or delay when accelerating. Customer may state that this occurs when driving at speeds between 5 kph (5 mph) and 20 kph (12 mph) after having previously accelerated from a very low speed and having backed off of the accelerator pedal for a short time. 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.