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February 13, 2020 Service bulletin

Emission

Chevrolet technical service bulletin N192273631 for 2018 Chevrolet Silverado 1500, 2018-2019 GMC Sierra Denali and 2019 Chevrolet Silverado 4500.

Bulletin number
N192273631
Component
Engine and engine cooling: engine: diesel
Summary
Emission - General Motors has decided to conduct a voluntary emissions recall involving certain 2018 model year diesel engine vehicles. The engine control module (ECM) in these vehicles may not adequately diagnose or illuminate the malfunction indicator lamp (Check Engine Light) when frequent regeneration of the diesel particulate filter (DPF) occurs. Dealers are to program the engine control module (ECM) with corrected software.

Owners of these vehicles have filed 122 complaints in the engine category.

Vehicles covered

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