GM Service Manual Online
For 1990-2009 cars only

After programming a new theft deterrent module (immobilizer) or replacing a key, you must program the keys to the module.

If the immobilizer has been replaced, the customer must provide all of the vehicle's ignition keys for programming at this time.

  1. From the Immobilizer Menu of the scan tool, select F3: Special Functions.
  2. Select F2: Program Transponder-Key.
  3. Follow the scan tool on-screen instructions.