GMC Yukon Denalid Owner's Manual page 176

6. Locate in the garage, the garage door opener
receiver (motor-head unit). Locate the "Learn"
or "Smart" button. This can usually be
found where the hanging antenna wire is
attached to the motor-head unit.
7. Firmly press and release the "Learn" or
"Smart" button. The name and color of
the button may vary by manufacturer.
You will have 30 seconds to start Step 8.
8. Return to the vehicle. Firmly press and hold
the programmed Universal Home Remote
button for two seconds, then release.
Repeat the press/hold/release sequence a
second time, and depending on the brand of
the garage door opener or other rolling
code device, repeat this sequence a third time
to complete the programming.
The Universal Home Remote should now
activate your rolling-code equipped device.
To program the remaining two Universal
Home Remote buttons, begin with Step 2 of
"Programming Universal Home Remote." Do not
repeat Step 1, as this will erase all previous
programming from the Universal Home Remote
buttons.
176
Gate Operator and Canadian
Programming
Canadian radio-frequency laws require transmitter
signals to time out or quit after several seconds
of transmission. This may not be long enough
for Universal Home Remote to pick up the signal
during programming. Similarly, some U.S. gate
operators are manufactured to time out in
the same manner.
If you live in Canada, or you are having difficulty
programming a gate operator or garage door
opener by using the "Programming Universal
Home Remote" procedures, regardless of where
you live, replace Step 3 under "Programming
Universal Home Remote" with the following:
Continue to press and hold the Universal Home
Remote button while you press and release every
two seconds (cycle) the hand-held transmitter
button until the frequency signal has been
successfully accepted by the Universal Home
Remote. The Universal Home Remote indicator
light will flash slowly at first and then rapidly.
Proceed with Step 4 under "Programming
Universal Home Remote" to complete.