In certain vehicles, equipped with a manual HVAC system (RPO: C4P), the K33 HVAC Control Module may not...
Chevrolet technical service bulletin N222375000 for 2020-2022 Chevrolet Silverado 1500 and 2020-2022 GMC Sierra 1500.
- Bulletin number
- N222375000
- Component
- Visibility: defroster/defogger/HVAC system
- Summary
- In certain vehicles, equipped with a manual HVAC system (RPO: C4P), the K33 HVAC Control Module may not properly enable the heater auxiliary coolant pump to maintain cabin heater temperature during engine auto stop events. Reprogram the K33 HVAC Control Module with updated software.
Owners of these vehicles have filed 49 complaints in the visibility category.
Vehicles covered
- Chevrolet Silverado 1500 2020-2022 202020212022
- GMC Sierra 1500 2020-2022 202020212022
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