2010 Chevrolet Silverado 1500 Crew Cab Owner's Manual - Page 143

Q (Lock): Press to lock all the doors. If enabled through the Driver Information Center (DIC), the turn signal lamps flash once to indicate locking has occurred. If enabled through the DIC, the horn chirps when Q is pressed again within three seconds. See DIC Vehicle Customization (With DIC Buttons) on page 4‑73 for additional information. Pressing Q arms the content theft‐deterrent system. See Content Theft-Deterrent on page 3‑17. If enabled through the DIC, the turn signal lamps flash twice to indicate unlocking has occurred. See DIC Vehicle Customization (With DIC Buttons) on page 4‑73. If enabled through the DIC, the exterior lights may turn on. See "APPROACH LIGHTING" under DIC Vehicle Customization (With DIC Buttons) on page 4‑73. Pressing K on the RKE transmitter disarms the content theft‐deterrent system. See Content Theft-Deterrent on page 3‑17. K (Unlock): Press once to unlock only the driver door. If K is pressed again within three seconds, all remaining doors unlock. The interior lamps may come on and stay on for 20 seconds or until the ignition is turned on. L (Vehicle Locator/Panic Alarm): Press and release to locate the vehicle. The turn signal lamps flash and the horn sounds three times. Press and hold L for more than two seconds to activate the panic alarm. The turn signal 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. 3-5