Programming Immobilizer System Components (Domestic, Canada, and Japan): Notes
IMPORTANT:
When replacing an engine control module (ECM) with a GM SPO replacement part, the new ECM will learn the incoming password of the remote control door lock receiver (RCDLR) immediately upon the next ignition switch from OFF to CRANK. If the ECM is being replaced with an SPO replacement part, the theft deterrent password learn procedure is not required.
An ECM which has been installed in another vehicle will have learned the theft deterrent password of that particular vehicles RCDLR. Perform either the 10-minute relearn procedure or the 30-minute relearn procedure to learn the password of the current vehicles RCDLR.
A new RCDLR installed in a vehicle will require having the ECM (if equipped) learn the new RCDLR's password. Perform either the 10-minute relearn procedure or the 30-minute relearn procedure to learn the password of the new RCDLR.
An ECM which has been installed in another vehicle will have learned the theft deterrent password of that particular vehicles RCDLR. Perform either the 10-minute relearn procedure or the 30-minute relearn procedure to learn the password of the current vehicles RCDLR.
A new RCDLR installed in a vehicle will require having the ECM (if equipped) learn the new RCDLR's password. Perform either the 10-minute relearn procedure or the 30-minute relearn procedure to learn the password of the new RCDLR.