This technical bulletin provides a procedure to locate a possible short in the engine wiring harness.
Chevrolet technical service bulletin 21-NA-081 for 2019-2021 Chevrolet Silverado 1500, 2021-2023 Chevrolet Tahoe and 2019-2021 GMC Sierra 1500 and others.
- Bulletin number
- 21-NA-081
- Component
- Engine and engine cooling
- Summary
- This technical bulletin provides a procedure to locate a possible short in the engine wiring harness.
Owners of these vehicles have filed 3,567 complaints in the engine category.
Vehicles covered
- Chevrolet Silverado 1500 2019-2021 201920202021
- Chevrolet Tahoe 2021-2023 202120222023
- GMC Sierra 1500 2019-2021 201920202021
- Chevrolet Suburban 2021-2023 202120222023
- GMC Yukon 2021-2023 202120222023
- Cadillac Escalade 2021-2023 202120222023
- Chevrolet Suburban 1500 2021-2022 20212022
- Cadillac Escalade Na 2021 2021
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