Gmc 2007 Sierra User Manual download pdf (Page 133)

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101

Testing the Alarm

The alarm can be tested by following these steps:

1. From inside the vehicle, lower the driver’s

window and open the driver’s door.

2. Activate the system by locking the doors with

the RKE transmitter.

3. Get out of the vehicle, close the door and wait

for the security light to go out.

4. Then reach in through the window, unlock the

door with the manual door lock and open the

door. This should set off the alarm.

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

on page 600.

If the alarm does not sound or the vehicle’s

headlamps do not ﬂash, see your dealer for

service.

Passlock

Your vehicle has 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 600. See your dealer

for service.

In an emergency, call the GM Roadside

Assistance Center. See Roadside Assistance

Program on page 644.

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