GMC SIERRA DENALI 2002 Manual page 81

At times you may notice a decrease in range. This is
normal for any remote keyless entry system. If the
transmitter does not work or if you have to stand closer
to your vehicle for the transmitter to work, try this:
D
Check the distance. You may be too far from your
vehicle. You may need to stand closer during rainy
or snowy weather.
D
Check the location. Other vehicles or objects may be
blocking the signal. Take a few steps to the left or
right, hold the transmitter higher, and try again.
D
Check to determine if battery replacement is
necessary. See the instructions that follow.
D
If you're still having trouble, see your dealer or a
qualified technician for service.
2-8
Operation
UNLOCK: Pressing this button once will unlock the
driver's door. The interior lamps will come on. Pressing
UNLOCK again within three seconds will cause the
remaining doors to unlock.
You can choose different feedback options for each
press of the UNLOCK button. See "Secondary
Information Center" in the Index for more information.
LOCK: Pressing this button once will lock all of the
doors. You can choose different feedback options for
each press of the LOCK button. See "Secondary
Information Center" in the Index for more information.
Operating the keyless entry transmitter may interact
-
with the theft deterrent system. See "Content
Deterrent" and "Secondary Information Center" in the
Index for more information.
Remote Panic Alarm
When the horn symbol on the keyless entry transmitter
is pressed, the horn will sound and the headlamps and
taillamps will flash for up to 30 seconds. This can be
turned off by pressing the horn button again, waiting for
30 seconds, or starting the vehicle.
-
Theft