• Fixes to help ensure proper functionality for heating and cooling features
GMC technical service bulletin 654.11 for 2026 GMC Acadia, 2026 Chevrolet Traverse and 2026 Buick Enclave.
- Bulletin number
- 654.11 (654.11)
- Component
- Unknown or other
- Summary
- • Fixes to help ensure proper functionality for heating and cooling features. • Improvements to night mode lights for shifting gears. • Fixes for Daytime Running Lamps turning on when set to Off. • Fixes to help prevent erroneous missing key messages on driver display. • Fixes for accuracy of low tire pressure alert. • Fixes for speed threshold for pedestrian alerts. • Fixes to help ensure proper functionality for shifting. • Fixes to help protect transmission health. • Improvements to diagnostics to prevent vehicle not starting. • Fixes to help reduce instances of check engine light activation in cold weather.
Vehicles covered
- GMC Acadia 2026 2026
- Chevrolet Traverse 2026 2026
- Buick Enclave 2026 2026
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