GMC 2010 Sierra Owner's Manual page 214

Programming Universal Home
Remote Fixed Code
For questions or help programming the Universal Home
Remote System, call 1-866-572-2728 or go to
learcar2u.com.
Most garage door openers sold before 1996 are Fixed
Code units.
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.
3-76
To program up to three devices:
1. To verify that the garage door opener is a Fixed
Code unit, remove the battery cover on the hand
held transmitter supplied by the manufacturer of
the garage door opener motor. If there are a row of
dip switches similar to the graphic above, the
garage door opener is a Fixed Code unit. If you do
not see a row of dip switches, return to the
previous section for Programming Universal Home
Remote Rolling Code.
Your hand held transmitter can have between eight
to 12 dip switches depending on the brand of
transmitter.