GMC 2001 Denali Owner's Manual page 96

Changes or modifications to this system by other than
an authorized service facility could void authorization
to use this equipment.
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 or
resynchronization is necessary. See the instructions
that follow.
D
If you're still having trouble, see your dealer or a
qualified technician for service.
Operation
UNLOCK: Pressing this button once will unlock the
driver's door. The interior lamps will come on and the
parking lamps will flash. Pressing UNLOCK again
within three seconds will cause the remaining doors to
unlock. The interior lamps will come on. The vehicle's
perimeter lamps (headlamps, parking lamps and puddle
lamps) will also come on (if programmed in the
secondary information center).
You can choose different feedback options for each
press of the UNLOCK button and you can also
choose not to have the perimeter lamps come on. See
"Secondary Information Center" in the Index for
more information.
LOCK: Pressing this button once will lock all of the
doors. Pressing the button again within three seconds
will cause the horn to chirp. 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.
-
Theft
2-9