Testing The Alarm - GMC 2000 Envoy Owner's Manual

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Remember, the theft deterrent system won't activate if
you lock the doors with a key or use the manual door
lock. It activates only if you use a power door lock
switch with the door open, or with the remote keyless
entry transmitter. You should also remember that you
can start your vehicle with the correct ignition key if the
alarm has been set off.
Here's how to avoid setting off the alarm by accident:
D
If you don't want to activate the theft
system, the vehicle should be locked with the door
key after the doors are closed.
D
Always unlock a door with a key, or use the remote
keyless entry transmitter. Unlocking a door any other
way will set off the alarm.
If you set off the alarm by accident, unlock any door
with the key. You can also turn off the alarm by pressing
UNLOCK on the remote keyless entry transmitter.
The alarm won't stop if you try to unlock a door any
other way.
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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
power door lock switch while the door is open, or
with the remote keyless entry transmitter.
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deterrent
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 high
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 high
headlamps do not flash, the vehicle should be serviced
by an authorized service center.
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beam headlamps flash, check to see if the
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beam