2010 GMC Acadia Owner's Manual - Page 34

2-4 Keys, Doors and Windows Press and hold L for more than two seconds to activate the panic alarm. The parking lamps flash and the horn sounds repeatedly for 30 seconds. The alarm turns off when the ignition is moved to ON/RUN or L is pressed again. The ignition must be in LOCK/OFF for the panic alarm to work. The vehicle comes with two transmitters. Each transmitter will have a number on it, "1" or "2". These numbers correspond to the driver of the vehicle. For example, the memory seat position for driver 1 will be recalled when using the transmitter labeled "1", if enabled through the vehicle personalization. See "Memory Seat and Mirrors" under Power Seat Adjustment on page 3‑4 and "Memory Seat Recall" under Vehicle Personalization (With DIC Buttons) on page 5‑45 for more information. If enabled through the DIC, the parking lamps flash twice to indicate unlocking has occurred. See Vehicle Personalization (With DIC Buttons) on page 5‑45. Pressing K on the RKE transmitter disarms the content theft‐deterrent system. See Anti-Theft Alarm System on page 2‑13. Programming Transmitters to the Vehicle Only RKE transmitters programmed to this vehicle will work. If a transmitter is lost or stolen, a replacement can be purchased and programmed through your dealer/retailer. When the replacement transmitter is programmed to this vehicle using the DIC, all remaining transmitters must also be reprogrammed. Any lost or stolen transmitters will no longer work once the new transmitter is programmed. Each vehicle can have up to eight transmitters programmed to it. See "Relearn Remote Key" under Driver Information Center (DIC) (With DIC Buttons) on page 5‑24 or Driver Information Center (DIC) (Without DIC Buttons) on page 5‑29 for instructions on how to program transmitters to this vehicle. & (Power Liftgate): Press and hold until the liftgate begins to move to open or close the liftgate. The taillamps flash and a chime sounds to indicate when the liftgate is opening or closing. L (Vehicle Locator/Panic Alarm): Press and release to locate the vehicle. The parking lamps flash and the horn sounds three times.