Hello & Welcome to JA,
A scan tool must be used to program the system WITHOUT the original key. Here are the procedures.
Programming Theft Deterrent System Components
Important: When replacing a theft deterrent control module with a GM SPO Replacement Part, insure the 10-minute relearn procedure or the 30-minute relearn procedure is performed prior to the Setup a New Theft Deterrent Control Module procedure.
Use this procedure after replacing any of the following components:
Important: When replacing either the passkey III+ (PK3+) keys, ECM or theft deterrent control module and the 10-minute relearn procedure is used, ensure that the appropriate calibration is selected for the replacement component on the calibration selection screen of the service programming system. The appropriate calibrations for specific VTD system components are described below.
Important: Perform this step ONLY on vehicles with EXPORT configured theft deterrent control modules.
Important: This procedure is not available on vehicles equipped with EXPORT configured theft deterrent control modules.
Important: The vehicle learns the key transponder information and/or passwords on the ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
Use this procedure only if replacing the theft deterrent control module with a GM SPO Replacement Part.
Important: Before proceeding with Step 1, ensure the 10-minute or 30-minute relearn procedure has been completed.
ok well I was told different by a employee with keymasters today, I do not have they key yet so he didn't go into detail except to tell me to call him and he would walk me through it, so inless you can walk me through it without the scan tool im going to have to go with him. thanks for your time though either way