RAM 3500 2026 — technical service bulletin
Bulletin 08-056-26 · NHTSA communication 11029664 · issued Feb 21, 2026
Technical service bulletin
communication type
Electrical System
component
2026
model years
1
vehicle entries
Official summary
Flash: Brake System Control Module (BSCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● C0037-2F - Left Rear Wheel Speed Sensor - Signal Erratic. ● C003A-2F - Right Rear Wheel Speed Sensor - Signal Erratic. Customers may also comment on the following: ● When either or both DTCs are set the ABS light will turn on and vehicle will lose ABS, Trailer Sway Control (TSC) and Electronic Stability Control (ESC) functions. , new LOPs, new Claims Data info, new
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.