General Motors (GM) has broadened a previous recall for a potentially hazardous transmission defect, adding more than 90,000 vehicles to the nearly half a million already impacted. The expanded recall now includes Cadillac sedans and the Chevrolet Camaro, with the issue potentially causing the wheels to lock unexpectedly.
In a recall report submitted to the National Highway Traffic Safety Administration (NHTSA), the automaker stated that the transmission control valve in certain 2020-2021 Cadillac CT4, 2020-2021 Cadillac CT5, 2019-2020 Cadillac CT6, and 2020-2022 Chevrolet Camaro vehicles with a 10-speed transmission could experience ‘excessive wear’ over time. This could lead to ‘harsh shifting’ and, in rare instances, a ‘momentary’ wheel lock-up.
The Chevrolet Camaro represents the largest share, with 50,147 units from the 2020-2022 model years. Next is the Cadillac CT5, with 27,097 sedans from 2020-2021, followed by 10,602 CT6 models from 2019-2020. The smallest group includes 2,235 Cadillac CT4 vehicles from 2020-2021.
The original recall, announced in November 2024, applied exclusively to full-size Chevrolet, GMC, and Cadillac pickups and SUVs equipped with diesel engines. It remains uncertain whether a future recall might extend to gasoline-powered models in the same category.
GM is deploying a software update designed to detect wear up to 10,000 miles before failure, which will trigger a check engine light and limit gear functionality. Owner notifications will begin on April 21.

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