RAM 2500 2025–2026 — technical service bulletin
Bulletin 08-331-26 · NHTSA communication 11037333 · issued Sep 11, 2026
Technical service bulletin
communication type
Electrical System
component
2025–2026
model years
8
vehicle entries
Official summary
Flash: Vehicle System Interface Module (VSIM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● B2204-87 - Ecu Configuration Mismatch-Missing Message. Customers may comment on the following: ● Odometer is blinking while ignition is on. This bulletin involves inspecting and possibly reprogramming the VSIM 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.