Chevrolet Avalanche 1500 reduced engine power light and stalling issue after throttle body repair on Chevrolet Avalanche 1500

Some Chevrolet Avalanche 1500 owners report experiencing issues with the reduced engine power light and stalling after a throttle body repair. These problems can be triggered by various factors, including malfunctioning Throttle Position Sensors or issues within the TAC system. Additionally, some owners find that stalling may be linked to a dirty throttle body, necessitating cleaning or further repairs. Even after addressing throttle body concerns, the reduced engine power mode may persist, with some attempting temporary solutions like disconnecting and reconnecting the positive battery cable. It is crucial for owners to follow diagnostic trouble codes stored in the OBD II system when the reduced engine power light activates, as this can assist in identifying the underlying issues. Symptoms of this mode often include significant reductions in acceleration and limited top speeds, typically around 35-45 mph. Therefore, further investigation into the Throttle Position Sensor, TAC system, and diagnostic trouble codes is recommended for those facing these issues.