This informational bulletin provides information for dealers/technicians on Aero Shutter Related...
Chevrolet technical service bulletin 21-NA-077 for 2019-2021 Chevrolet Silverado 1500, 2019-2021 Chevrolet Tahoe and 2019-2021 GMC Sierra 1500 and others.
- Bulletin number
- 21-NA-077
- Component
- Electrical system
- Summary
- This informational bulletin provides information for dealers/technicians on Aero Shutter Related Diagnostic Codes.
Owners of these vehicles have filed 946 complaints in the electrical category.
Vehicles covered
- Chevrolet Silverado 1500 2019-2021 201920202021
- Chevrolet Tahoe 2019-2021 201920202021
- GMC Sierra 1500 2019-2021 201920202021
- Chevrolet Suburban 2019-2021 201920202021
- GMC Yukon 2019-2021 201920202021
- Chevrolet Silverado 2500 2020-2021 20202021
- GMC Yukon XL 2019-2021 201920202021
- Cadillac Escalade 2019-2021 201920202021
- Chevrolet Suburban 1500 2021 2021
- Chevrolet Silverado 3500 2020-2021 20202021
- GMC Yukon Denali 2019 2019
- Cadillac Escalade ESV 2019-2021 201920202021
- Cadillac Escalade Na 2021 2021
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