General Motors is recalling approximately 462,000 diesel-powered trucks and SUVs, including Chevrolet Silverado and GMC Sierra models from 2020 to 2022. A faulty transmission control valve can lead to rear wheel lock-up, increasing crash risks. Drivers may experience harsh shifting prior to lock-up. The company will install updated transmission software to monitor wear, preventing potential incidents. Owners will receive notification letters starting December 9. Previous reports indicated 11 incidents linked to the issue, including three minor injuries. The recall highlights the importance of addressing vehicle safety concerns.