Operating The Transmitter - GMC 2001 Safari Owner's Manual

Operating the Transmitter

Press and hold the appropriate button on the HomeLink
Transmitter. The indicator light comes on while the
signal is being transmitted.
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If the hand held transmitter appears to program the
HomeLink Transmitter but does not open your garage
door and if the garage door opener was manufactured
after 1996, the garage door opener may have a "rolling
code" system. A rolling code system changes the code
of the garage door opener every time you open or close
the garage door.
To determine if you have this system, press the
button on the HomeLink Transmitter that you have
programmed already. If the indicator light flashes
rapidly for one to two seconds then turns solid, the
garage door opener has a rolling code system. In a
rolling code system, the garage door motor head unit
must be trained to the HomeLink Transmitter.
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Training a Garage Opener with a
"Rolling Code" Feature (If Equipped)
If you have not previously programmed the hand
transmitter to the HomeLink Transmitter, see
"Programming the Transmitter" listed previously.
If you have completed this programming already, you now
need to train the garage door opener motor head unit to
recognize the HomeLink Transmitter. Refer to your garage
door opener owner's manual for the proper transmitter
training procedure for your garage door opener brand.
1. Find the training button on the garage door opener
motor head unit. The exact location and color will
vary by garage door opener brand. If you have
difficulty finding the training button, refer to your
garage door opener owner's manual.
Because of the steps involved, it may be helpful to
have another person available to assist you in
programming the transmitter.
2. Press the training button on the garage door opener
motor head unit. An indicator light will begin to flash
when the motor head unit enters the training mode.
Following this step, you have 30 seconds to start Step 3.
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held