Cadillac 2009 XLR Owner's Manual page 107

2. 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.
The hand held transmitter can have between
eight to 12 dip switches depending on the brand
of transmitter.
The garage door opener receiver (motor head unit)
could also have a row of dip switches that can be
used when programming the Universal Home
Remote. If the total number of switches on the motor
head and hand held transmitter are different, or if the
dip switch settings are different, use the dip switch
settings on the motor head unit to program the
Universal Home Remote. The motor head dip switch
settings can also be used when the original hand
held transmitter is not available.
Example of Eight Dip Switches with Two Positions
2-49