— A General Motors 10-speed transmission recall involves more than 90,000 of these vehicles because the front wheels can lockup while driving.
- 2019-2020 Cadillac CT6
- 2020-2021 Cadillac CT4
- 2020-2021 Cadillac CT5
- 2020-2022 Chevrolet Camaro
GM says the 10-speed transmission control valve may suffer from excess wear over time and cause a loss of pressure within the valve. The result is harsh shifting, and in "rare cases" the front wheels can experience a "momentary" lockup which occurs in a downshift from eighth gear.
"Excessive wear within the transmission control valve body can cause a fluid leak leading to a pressure drop that causes certain valves to move unexpectedly." — General Motors
GM dealers will install new transmission control module software that will monitor transmission valve performance and detect excess wear about 10,000 miles before a wheel lockup could occur.
If a problem occurs, the transmission will be limited to fifth gear which will prevent the possibility of a wheel lockup. Additionally, a driver will see a service engine light and reduced propulsion message in the instrument panel.
GM 10-speed transmission recall letters are expected to be mailed April 21, 2025.
Cadillac owners may call 800-333-4223 and Chevrolet customers can call 800-222-1020. GM's 10-speed transmission recall number is N242480630.
