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How To Reset / Calibrate Your APPS Sensor WARNING! Any time the batteries are disconnected, batteries ran dead, ECM disconnected, Accelerator Pedal Position Sensor (APPS Sensor) disconnected, Accelerator Pedal Position Sensor (APPS Sensor) replaced the Accelerator Pedal Position Sensor (APPS Sensor) calibration procedure MUST be done again to reset the Accelerator Pedal Position Sensor (APPS Sensor) idle and WOT limits. If the calibration is not done error codes and other issues must occur. 1. Disconnect the batteries and leave disconnected for at least 30 minutes. Now reconnect the batteries. 2. Turn key to ON position. (Do not Start) 3. Without starting engine, slowly press throttle pedal to floor and then slowly release. This step must be done (one time)>to ensure accelerator pedal position sensor calibration has been learned by ECM. If not done, possible DTC’s may be set. 4. Turn the key OFF. NOTE: Disconnecting the batteries will not erase or reset error codes. All it does is erase the Accelerator Pedal Position Sensor (APPS Sensor) calibration in the ECM. As the video below will demostrate.
