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December 7, 2021 Service bulletin

Heater Outlet Pipe ? Population Revised

Chevrolet technical service bulletin DCS5999 for 2019-2021 Chevrolet Silverado 5500, 2019-2021 Chevrolet Silverado 4500 and 2019, 2021 Chevrolet Silverado 6500 and others.

Bulletin number
DCS5999
Component
Engine and engine cooling
Summary
Heater Outlet Pipe ? Population Revised

Owners of these vehicles have filed 3 complaints in the engine category.

Vehicles covered

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