GMC SIERRA 2020 Owner's Manual page 164

Learn or Smart Button
4. After completing Steps 1 3,
locate the Learn or Smart
button inside the garage on the
garage door opener receiver.
The name and color of the
button may vary by
manufacturer.
5. Press and release the Learn or
Smart button. Step 6 must be
completed within 30 seconds of
pressing this button.
6. Inside the vehicle, press and
hold the newly programmed
Universal Remote system
button for two seconds and
then release it. If the garage
door does not move or the
lamp on the garage door
opener receiver does not flash,
press and hold the same
button a second time for
two seconds, then release it.
Again, if the door does not
move or the garage door lamp
does not flash, press and hold
the same button a third time for
two seconds, then release it.
The Universal Remote system
should now activate the
garage door.
Repeat the process for
programming the two remaining
buttons.
Radio Signals for Some Gate
Operators
For questions or programming help,
see www.homelink.com/gm or call
1-800-355-3515. For calls placed
outside the U.S., Canada, or Puerto
Rico, international rates will apply
and may differ based on landline or
mobile phone.
Some radio frequency laws and
gate operators require transmitter
signals to time out or quit after
several seconds of transmission.
Instruments and Controls
This may not be long enough for the
Universal Remote system to pick up
the signal during programming.
If the programming did not work,
replace Step 2 under Programming
the Universal Remote System with
the following:
Press and hold the Universal
Remote system button while
pressing and releasing the
hand-held transmitter button every
two seconds until the signal has
been successfully accepted by the
Universal Remote system. The
Universal Remote system indicator
light will flash slowly at first and then
rapidly. Proceed with Step 3 under
Programming the Universal Remote
System to complete.
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