2008 GMC Envoy Owner's Manual - Page 79

Remote Keyless Entry (RKE) System Operation If your vehicle has this feature, you can lock and unlock your doors from about 3 feet (1 m) up to 30 feet (9 m) away using the RKE transmitter supplied with your vehicle. There are other conditions which can affect the performance of the transmitter. See Remote Keyless Entry (RKE) System on page 2-4. You can program different feedback settings through the Driver Information Center (DIC). For more information see Driver Information Center (DIC) on page 3-49. Q (Lock): Press Q to lock all the doors. Press Q again within three seconds and the horn will chirp. K (Unlock): Press K to unlock the driver's door. The parking lamps will flash and the interior lights will come on. Press K a second time within three seconds to unlock all the doors. L (Panic): Press L to make the horn sound. The headlamps and taillamps will flash for up to 30 seconds. This can be turned off by pressing L again, by waiting for 30 seconds, or by starting the vehicle. Matching Transmitter(s) to Your Vehicle Each RKE transmitter is coded to prevent another transmitter from unlocking your vehicle. If a transmitter is lost or stolen, a replacement can be purchased through your dealer/retailer. All transmitters need to be re-coded to match the new transmitter. The lost transmitter will no longer work after the new transmitters are re-coded. Each vehicle can have a maximum of four transmitters matched to it. 2-5