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January 29, 2025 Service bulletin

Certain 2024 MY Chevrolet Silverado and GMC Sierra vehicles with a 6.6L diesel engine have an Engine...

Chevrolet technical service bulletin N242438501-02 for 2024 Chevrolet Silverado 2500, 2024 GMC Sierra 2500 and 2024 Chevrolet Silverado 3500 and others.

Bulletin number
N242438501-02 (N242438501-02)
Component
Unknown or other
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).

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