P1518 GMC Throttle Actuator Control Module Performance

Possible causes

– Dead or weak battery
– Poor circuit connection – Check Throttle Actuator Control (TAC) module connector for water
– Faulty Throttle Actuator Control (TAC) module

When is the obd code mean?

The Engine Control Module (ECM) has detected a loss of data or invalid data from the Throttle Actuator Control (TAC)

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– No throttle response

P1518 GMC OBD Code Description