Service Update
Chevrolet technical service bulletin N242450631 for 2019-2022 Chevrolet Silverado 1500, 2019-2022 GMC Sierra 1500 and 2020-2023 Cadillac CT4.
- Bulletin number
- N242450631 (N242450631)
- Component
- Engine
- Summary
- Service Update. Certain vehicles equipped with a 2.7L engine (RPO L3B), may have an Engine Control Module (ECM) that does not sufficiently control fuel injector flow rate under certain driving conditions. Dealers are to reprogram the ECM.
Owners of these vehicles have filed 2,673 complaints in the engine category.
Vehicles covered
- Chevrolet Silverado 1500 2019-2022 2019202020212022
- GMC Sierra 1500 2019-2022 2019202020212022
- Cadillac CT4 2020-2023 2020202120222023
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