2006 GMC Yukon Owner's Manual - Page 114

Here is how to avoid setting off the alarm by accident: • If you do not want to activate the theft-deterrent system, the vehicle should be locked with the door key after the doors are closed. • Always unlock a door with the remote keyless entry transmitter. If you set off the alarm by accident, turn off the alarm by pressing unlock on the remote keyless entry transmitter or by placing the key in the ignition and turning it to START. To replace the fuse, see Instrument Panel Fuse Block on page 5-107 and Underhood Fuse Block on page 5-109. If the alarm does not sound or the vehicle's headlamps do not flash, see your dealer for service. Passlock® Your vehicle is equipped with the Passlock® theft-deterrent system. Passlock® is a passive theft-deterrent system. Passlock® enables fuel if the ignition lock cylinder is turned with a valid key. If a correct key is not used or the ignition lock cylinder is tampered with, fuel is disabled. If the engine stalls and the security light flashes, wait until the light stops flashing before trying to restart the engine. Remember to release the key from START as soon as the engine starts. If the engine is running and the security light comes on, you will be able to restart the engine if you turn the engine off. However, your Passlock® system is not working properly and must be serviced by your dealer. Your vehicle is not protected by Passlock® at this time. You may also want to check the fuse. See Fuses and Circuit Breakers on page 5-106. See your dealer for service. In an emergency, call the GM Roadside Assistance Center. See Roadside Assistance Program on page 7-6. Testing the Alarm The alarm can be tested by following these steps: 1. From inside the vehicle, activate the system by locking the doors with the remote keyless entry transmitter. 2. Wait for the security light to go out. 3. Unlock the door with the manual door lock and open the door. This should set off the alarm. 4. Turn off the alarm by pressing unlock on the remote keyless entry transmitter or by placing the key in the ignition and turning it to START. If the alarm does not sound when it should, but the vehicle's headlamps flash, check to see if the horn works. The horn fuse may be blown. 2-18