Hi, glad to be of help. To do a 10 minute relearn you need a scan tool. Try a 30 minute relearn. This should fix your problem. Make sure battery is fully charged before beginning.
P1630: THEFT DETERRENT PASSWORD
This code will set if the PCM
remains in theft deterrent password XXXXX mode for more than 2 seconds. The PCM
will not light the Check Engine/Service Engine Soon light. It will store the
conditions present when the code set. This code can be cleared by a scan tool.
Theft deterent systems, relearn procedures
GMVehicle Theft Deterrent (VTD) Relearn Procedures
Passlock III Relearn Procedure
30-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)
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.
Observe the security indicator. After approximately 10 minutes, the telltale will turn OFF.
Turn OFF the ignition, and wait 5 seconds.
4. Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes.
5. ignition OFF before attempting to start the vehicle.
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.
If additional keys are required to be learned, continue to step 7.
With a previously learned master key, turn ON the ignition, with the engine OFF.
Turn OFF the ignition and remove the key.
Within 10 seconds insert the key to be learned. Turn ON the ignition with the engine OFF. The vehicle has now learned the new key.
Passlock III system uses a standard ignition key to rotate a specially coded ignition switch.
GM - three security systems currently in use: Pass-Key III (PK3) (transponder based)
system by Megamos, PASS-KEY II (VATS - key mounted resistor) and Passlock which uses a standard key.