Massive Recall: Full Size SUVs at Risk of Rear Wheel Lock-Up

General Motors has issued a recall for approximately 43,732 full-size SUVs due to a problem with the 10-speed automatic transmission. The issue stems from a transmission control valve in the affected models that may have experienced excessive wear, leading to fluid leakage and potential power loss.

According to a document submitted to the National Highway Traffic Safety Administration, the recall affects full-size SUVs from the 2022 model year, including the following models:

The excessive wear on the control valves in the 10-speed automatic transmission can result in fluid leakage, leading to a loss of pressure. This can cause the valve to move unexpectedly, resulting in harsh shifting or, in severe cases, temporary or permanent rear wheel lockup. The rear wheel lockup occurs when the transmission attempts to downshift from eight gears.

To address this issue, dealers will install new transmission control module (TCM) software that monitors valve performance and detects excess wear before any potential wheel lockup occurs. If the software identifies valve wear, the transmission will be limited to fifth gear, preventing wheel lockup. Additionally, a service engine light and reduced propulsion message will appear on the instrument panel.

For owners of the 2023 model year and later Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon, GMC Yukon XL, Cadillac Escalade, and Cadillac Escalade ESV vehicles, new transmission control software has been developed to detect excessive wear. Notification letters will be sent out on March 30 to inform owners of this update.