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October 27, 2020 Service bulletin

This service bulletin provides information and a service procedure for dealers/technicians on OnStar Over...

Chevrolet technical service bulletin 20NA196 for 2019-2021 Chevrolet Malibu, 2019-2021 Chevrolet Silverado 1500 and 2021 Chevrolet Tahoe and others.

Bulletin number
20NA196
Component
Electrical system
Summary
This service bulletin provides information and a service procedure for dealers/technicians on OnStar Over the Air Update for TTY / TDD Operation and Continuous Improvement Changes.

Owners of these vehicles have filed 1,922 complaints in the electrical category.

Vehicles covered

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