2012 Chevrolet Colorado Owner's Manual - Page 39

Keys, Doors, and Windows Testing the Alarm To test the alarm: 1. From inside the vehicle, activate the system by locking the doors with the RKE transmitter. 2. Unlock the door with the manual door lock and open the door. This should set off the alarm. 3. To turn the alarm off, press the UNLOCK button on the RKE transmitter or start the engine. If the alarm does not sound when it should but the lights flash, check to see if the horn works. The horn fuse may be blown. To replace the fuse, see Fuses and Circuit Breakers on page 10‑40. If the alarm does not sound or the front turn signal lamps do not flash, see your dealer for service. 2-11 Immobilizer See Radio Frequency Statement on page 13‑22 for information regarding Part 15 of the Federal Communications Commission (FCC) rules and Industry Canada Standards RSS-GEN/210/220/310. The key uses a transponder that matches an immobilizer control unit in the vehicle. Only the correct key starts the vehicle. If the key is ever damaged, the vehicle may not start. When trying to start the vehicle, if the engine does not start and the security light comes on, there may be a problem with the theft-deterrent system. Turn the ignition off and try again. If the engine still does not start, and the key appears to be undamaged, try another ignition key. Check the fuse. See Fuses and Circuit Breakers on page 10‑40. If the engine still does not start with the other key, the vehicle needs service. If the vehicle does start, the first key may be faulty. See your dealer who can service the theft-deterrent system and have a new key made. Immobilizer Operation (PASS-Key III+ Canada Only) This vehicle has a passive theft-deterrent system. The system is automatically armed when the key is removed from the ignition. The system is automatically disarmed when the key is turned to ON/RUN. You do not have to manually arm or disarm the system. The security light comes on if there is a problem with arming or disarming the theft-deterrent system.