There really is nothing like a simple reset. All of this is done using a shop scanner . There is a 30 minute relearn you can try to see if it resets. If not, unfortunatley, a shop will have to hook up scan tool for reset

0-Minute Relearn Procedure

Use this procedure after replacing any of the following components:

• The PASS-Key III plus keys
• The theft deterrent module (TDM)
• The powertrain control module (PCM)

1. Important:

• • This procedure is not available on vehicles equipped with EXPORT configured TDMs.
  • When performing the 30-minute relearn procedure, all previously learned keys will be erased from the TDM memory. Additional keys may be learned after performing the relearn procedure.
  • When replacing a TDM with a GM SPO Replacement Part, ensure the procedure to setup a new TDM is performed prior to the 30-Minute Relearn Procedure.

With a master vehicle key, turn ON the ignition, with the engine OFF.

1. Observe the security indicator. After approximately 10 minutes , the telltale will turn OFF.
2. Turn OFF the ignition, and wait 5 seconds .
3. Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes .

Important: The vehicle learns the key transponder information and/or passwords on the ignition switch transition from OFF to RUN. You must turn the ignition OFF before attempting to start the vehicle.

1. With a master vehicle key, start the vehicle. The vehicle has now learned the key transponder information and/or the ECM has now learned the fuel continue password.
2. If additional keys are required to be learned, refer to Adding Keys.
3. With a scan tool, clear any DTCs.