Chevrolet Silverado 2500 2024 — technical service bulletin
Bulletin N242438501-02 · NHTSA communication 11013233 · issued Jan 29, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2024
model years
4
vehicle entries
Official summary
Certain 2024 MY Chevrolet Silverado and GMC Sierra vehicles with a 6.6L diesel engine have an Engine Control Module (ECM) that may not properly diagnose, may not set Diagnostic Trouble Codes (DTCs), or may not illuminate the Malfunction Indicator Light (Check Engine Light) if certain fault conditions of the Selective Catalyst Reduction (SCR or NOx) catalyst occur. Dealers are to reprogram the Engine Control Module (ECM) and Transmission Control Module (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.