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August 27, 2021 Service bulletin

This service bulletin is to inform dealers that in extreme cold weather, a grille winter cover needs be...

Chevrolet technical service bulletin 20NA028 for 2021-2022 Chevrolet Trailblazer and 2020-2022 Buick Encore GX.

Bulletin number
20NA028
Component
Engine and engine cooling: cooling system
Summary
This service bulletin is to inform dealers that in extreme cold weather, a grille winter cover needs be added during PDI to avoid the customer returning with concerns related to charge air cooler icing.

Owners of these vehicles have filed 103 complaints in the engine category.

Vehicles covered

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