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April 6, 2021 Service bulletin

This technical bulletin provides a procedure on a flutter and/or buzz type noise heard from the rear of...

Chevrolet technical service bulletin 21NA063 for 2019-2021 Chevrolet Blazer, 2017-2021 GMC Acadia and 2018-2021 Chevrolet Traverse and others.

Bulletin number
21NA063
Component
Back over prevention
Summary
This technical bulletin provides a procedure on a flutter and/or buzz type noise heard from the rear of the vehicle.

Owners of these vehicles have filed 242 complaints in the driver assistance category.

Vehicles covered

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