This informational bulletin advises the technician to check for faults that may be caused by the trailer...
Chevrolet technical service bulletin 21-NA-155 for 2019-2022 Chevrolet Silverado 1500, 2021-2022 Chevrolet Tahoe and 2019-2022 GMC Sierra 1500 and others.
- Bulletin number
- 21-NA-155
- Component
- Electrical system
- Summary
- This informational bulletin advises the technician to check for faults that may be caused by the trailer other wise found by a possible faulty trailer connector.
Owners of these vehicles have filed 1,317 complaints in the electrical category.
Vehicles covered
- Chevrolet Silverado 1500 2019-2022 2019202020212022
- Chevrolet Tahoe 2021-2022 20212022
- GMC Sierra 1500 2019-2022 2019202020212022
- Chevrolet Suburban 2021-2022 20212022
- GMC Yukon 2021-2022 20212022
- Chevrolet Silverado 2500 2020-2022 202020212022
- GMC Yukon XL 2021-2022 20212022
- GMC Sierra 2500 2020-2022 202020212022
- Cadillac Escalade 2021-2022 20212022
- Chevrolet Suburban 1500 2021-2022 20212022
- Chevrolet Silverado 3500 2020-2022 202020212022
- GMC Sierra 3500 2020-2022 202020212022
- Cadillac Escalade ESV 2021-2022 20212022
- Cadillac Escalade Na 2021 2021
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