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May 17, 2021 Service bulletin

This service bulletin provides information and programming procedures for dealers/technicians on the...

Chevrolet technical service bulletin 21NA117 for 2020 Chevrolet Corvette, 2020 Cadillac CT5 and 2020 Cadillac CT4.

Bulletin number
21NA117
Component
Equipment
Summary
This service bulletin provides information and programming procedures for dealers/technicians on the release of Radio Software Update Version GB108.2 for vehicles equipped with Infotainment system RPO IOS or IOT, in addition to providing general robustness and stability enhancements.

Vehicles covered

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