2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 211

Universal Home Remote System See Radio Frequency Statement on page 8‑21 for information regarding Part 15 of the Federal Communications Commission (FCC) Rules and RSS-210/211 of Industry Canada. Do not use this system with any garage door opener that does not have the stop and reverse feature. This includes any garage door opener model manufactured before April 1, 1982. Read the instructions completely before attempting to program the transmitter. Because of the steps involved, it may be helpful to have another person assist with programming the transmitter. Be sure to keep the original remote control transmitter for use in other vehicles, as well as, for future programming. Only the original remote control transmitter is needed for Fixed Code programming. The programmed buttons should be erased when the vehicle is sold or the lease ends. See "Erasing Universal Home Remote Buttons" later in this section. Park the vehicle outside of the garage when programming a garage door. Be sure that people and objects are clear of the garage door or gate that is being programmed. Universal Home Remote System Operation (With Three Round LED) This vehicle may have the Universal Home Remote System. If there are three round Light Emitting Diode (LED) indicator lights above the Universal Home Remote buttons, follow the instructions below. This system provides a way to replace up to three remote control transmitters used to activate devices such as garage door openers, security systems, and home automation devices. 3-73