This informational bulletin explains a normal condition for sludge to form in the oil cap when equipped...
Chevrolet technical service bulletin 19NA263 for 2020-2022 Chevrolet Silverado 1500 and 2020-2022 GMC Sierra 1500.
- Bulletin number
- 19NA263
- Component
- Engine and engine cooling: exhaust system
- Summary
- This informational bulletin explains a normal condition for sludge to form in the oil cap when equipped with DEF system.
Owners of these vehicles have filed 1,908 complaints in the engine category.
Vehicles covered
- Chevrolet Silverado 1500 2020-2022 202020212022
- GMC Sierra 1500 2020-2022 202020212022
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