Comparing features of the latest stand-alone automatic transmission control modules. Which one will work best for your transmission? Jeff Smith breaks it down.

GM has begun a customer satisfaction program to address an issue with the transmission range control module in certain 2021 model year Chevy Bolt EV vehicles.

This procedure includes the related software programming. Affected components: transmission control module. Affected vehicles: certain units of the 2022 Chevy Silverado 1500.

See More Service Bulletins Corrective action: Dealers will reprogram the transmission control module with an updated program that eliminates the condition.