Chevrolet 2008 Silverado 1500 Pickup Owner's Manual page 168

Programming Universal Home
Remote — Fixed Code
For questions or help programming the Universal
Home Remote System, call 1-866-572-2728 or go
to www.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.
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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.