GMC 2011 Acadia Owner's Manual page 188

5-56 Instruments and Controls
When programming a garage door,
park outside of the garage. Park
directly in line with and facing the
garage door opener motor-head
or gate motor-head. Be sure that
people and objects are clear of the
garage door or gate that is being
programmed.
It is recommended that a new
battery be installed in your
hand-held transmitter for quicker
and more accurate transmission
of the radio-frequency signal.
Programming the Universal
Home Remote System
For questions or help programming
the Universal Home Remote
System, call 1 800 355 3515
or go to www.homelink.com.
Programming a garage door opener
involves time-sensitive actions, so
read the entire procedure before
starting. Otherwise, the device will
time out and the procedure will have
to be repeated.
To program up to three devices:
1. From inside the vehicle,
press and hold down the two
outside buttons at the same
time, releasing only when
the Universal Home Remote
I n f o r ma t i o n P r o v i d e d b y :
indicator light begins to flash,
after 20 seconds. This step will
erase the factory settings or all
previously programmed buttons.
Do not hold down the buttons for
longer than 30 seconds and do
not repeat this step to program
the remaining two Universal
Home Remote buttons.
2. Hold the end of your hand-held
transmitter about 3 to 8 cm
(1 to 3 inches) away from the
Universal Home Remote buttons
while keeping the indicator
light in view. The hand-held
transmitter was supplied by the
manufacturer of your garage
door opener receiver (motor
head unit).