This update contains a required software change to help improve the overall software update and...
Chevrolet technical service bulletin 654.10 for 2026 Chevrolet Silverado 2500 and 2026 GMC Sierra 2500.
- Bulletin number
- 654.10 (654.10)
- Component
- Unknown or other
- Summary
- This update contains a required software change to help improve the overall software update and diagnostics process. Be sure to install this update to be able to receive future software updates. • Improvements to help reduce check engine light activation and emissions system messages. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
Vehicles covered
- Chevrolet Silverado 2500 2026 2026
- GMC Sierra 2500 2026 2026
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