1999 Chevrolet Blazer Owner's Manual - Page 79

yellowblue 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. To replace the fuse, see "Fuses and Circuit Breakers" in the Index. If the alarm does not sound or the vehicle's headlamps do not flash, the vehicle should be serviced by an authorized service center. During normal operation, the SECURITY light will go off approximately five seconds after the key is turned to the RUN ignition position. If the engine stalls and the SECURITY light flashes, wait about 10 minutes 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 does not start after three (3) tries, the vehicle needs service. 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" in the Index). See your dealer for service. In an emergency, call the GM Roadside Assistance Center. See "Roadside Assistance" in the Index. PasslockR 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. 2-15