Chevrolet Silverado 2500 2023–2025 — technical service bulletin
Bulletin 25-NA-066 · NHTSA communication 11017176 · issued Mar 22, 2025
Technical service bulletin
communication type
Fuel/propulsion System
component
2023–2025
model years
14
vehicle entries
Official 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.
Vehicles covered
- 2024 Chevrolet Silverado 2500
- 2025 Chevrolet Silverado 2500
- 2024 Chevrolet Silverado 3500
- 2025 Chevrolet Silverado 3500
- 2023 Chevrolet Silverado 4500
- 2024 Chevrolet Silverado 4500
- 2023 Chevrolet Silverado 5500
- 2024 Chevrolet Silverado 5500
- 2023 Chevrolet Silverado 6500
- 2025 Chevrolet Silverado 6500
- 2024 GMC Sierra 2500
- 2025 GMC Sierra 2500
- 2024 GMC Sierra 3500
- 2025 GMC Sierra 3500
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.