THEFTLOCK® is designed to discourage theft of the vehicle's radio by learning a portion of the Vehicle Identification Number (VIN). The radio does not operate if it is stolen or moved to a different vehicle.
Chevrolet Cobalt Service & Repair Manual. Relearn
Initialization Sequence
The EBCM performs one initialization
test each ignition cycle. The initialization of the EBCM occurs when the
EBCM detects the there is a minimum of 500 RPM from the ECM by means of
a serial data message and the stop lamp switch is not applied. The initial ...