Symptom: The security light stays on after the vehicle has sucessfully remote-started, and after the key is inserted and turned to the on position.

Cause: The OEM PK3 transponder module is communicating synchronously with the GM SL on the vehicles databus.

Solution: Use the GM SL's connector 2, and interrupt the vehicle's PK3 ignition wire (pink, yellow, or white) with the GM SL's pink and pink/black. See the installation diagram for more information.