Chevrolet Silverado 2500 2024 — technical service bulletin
Bulletin N232412720 · NHTSA communication 10246328 · issued Dec 6, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2024
model years
4
vehicle entries
Official summary
Service Update - Certain vehicles, with a 6.6L diesel engine, may have an Engine Control Module (ECM) that does not correctly provide all required data to emissions Inspection/Maintenance (I/M) testing stations. Additionally, if the brake system control module would detect certain faults, the ECM may not properly illuminate the Malfunction Indicator Lamp (Check Engine Light). Dashboard warning messages and warning lights for traction control, stability control, and brake system remain functional for such faults. Dealers are to reprogram the ECM and TCM.
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.