This informational bulletin explains why more DEF is being used in diesel engines do to new emission...
Chevrolet technical service bulletin 20NA082 for 2020-2021 Chevrolet Silverado 1500, 2020-2021 GMC Sierra 1500 and 2020-2021 Chevrolet Silverado 2500 and others.
- Bulletin number
- 20NA082
- Component
- Engine and engine cooling
- Summary
- This informational bulletin explains why more DEF is being used in diesel engines do to new emission standards.
Owners of these vehicles have filed 1,453 complaints in the engine category.
Vehicles covered
- Chevrolet Silverado 1500 2020-2021 20202021
- GMC Sierra 1500 2020-2021 20202021
- Chevrolet Silverado 2500 2020-2021 20202021
- Chevrolet Colorado 2020-2021 20202021
- GMC Sierra 2500 2020-2021 20202021
- GMC Canyon 2020-2021 20202021
- Chevrolet Express 2020 2020
- GMC Savana 2020 2020
- Chevrolet Silverado 4500 2020 2020
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