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March 22, 2025 Service bulletin

This bulletin provides information on checking the inspection/maintenance system status parameters in the...

Chevrolet technical service bulletin 25-NA-066 for 2024-2025 Chevrolet Silverado 2500, 2024-2025 GMC Sierra 2500 and 2024-2025 Chevrolet Silverado 3500 and others.

Bulletin number
25-NA-066
Component
Engine
Summary
This bulletin provides information on checking the inspection/maintenance system status parameters in the ECM and how to have the parameters reset so the system will run and pass.

Owners of these vehicles have filed 54 complaints in the engine category.

Vehicles covered

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