If your vehicle has this feature, the vehicle's doors can be locked and unlocked, and the trunk can be unlocked from about 3 feet (1 m) up to 60 feet (18 m) away with the remote keyless entry transmitter.

If you notice a decrease in the operating range of the transmitter, see Remote Keyless Entry (RKE) System for information regarding conditions which may affect the transmitter's performance.

The following functions are available with the remote keyless entry system.

(Lock): Press the lock button to lock all the doors. If enabled through the Driver Information Center (DIC), the remote lock feedback can be programmed to have the horn chirp and/or the parking lamps flash when the remote keyless entry transmitter is used to lock the vehicle's doors. See "LOCK HORN" and "LIGHT FLASH" under DIC Vehicle Personalization for more information. Pressing the lock button may arm the content theft-deterrent system. See Content Theft-Deterrent .

(Unlock): Press the unlock button one time to unlock the driver's door. Press the unlock button again within five seconds to unlock the other doors. The interior lamps will come on and stay on for 20 seconds or until the ignition is turned on. If enabled through the DIC, the remote unlock feedback can be programmed to have the horn chirp and/or the turn signal lamps flash when the remote keyless entry transmitter is used to unlock the vehicle's doors. See "UNLOCK HORN" and "LIGHT FLASH" under DIC Vehicle Personalization for more information. If enabled through the DIC, and it is dark enough outside, the vehicle's high-beam headlamps and parking lamps will come on each time the unlock button on the transmitter is pressed. These exterior lamps will stay on for 20 seconds, or until a door is opened. See "EXT (Exterior) LIGHTS" under DIC Vehicle Personalization . Pressing the unlock button on the remote keyless entry transmitter will disarm the content-theft deterrent system. See Content Theft-Deterrent for more details.

(Remote Trunk Release): The trunk will open when this button on the transmitter is pressed and held for approximately one second. You can open the trunk with the transmitter when the vehicle is stationary.

(Vehicle Locator/Panic Alarm): Press and release this button to help locate your vehicle. The horn will sound three times and the hazard lamps will flash three times. Press and hold the button for three seconds to sound the panic alarm. The horn will sound and the hazard lamps will flash for 30 seconds. The ignition must be off for the vehicle locator/remote alarm to work. Press the vehicle locator/panic alarm button again or turn the ignition to ACC (Accessory) or RUN to turn off the alarm.

Matching Transmitter(s) to Your Vehicle

Each remote keyless entry transmitter is uniquely coded to prevent another transmitter from unlocking the vehicle. If a transmitter is lost or stolen, a replacement can be purchased through your GM dealer. Remember to bring any additional transmitters with you when you go to your dealer. The vehicle can have a maximum of four transmitters matched to it.

Battery Replacement

Under normal use, the battery in the remote keyless entry transmitter should last about four years.

You can tell the battery is weak if the transmitter will not work, at the normal range, in any location. If you have to get close to your vehicle before the transmitter works, it is probably time to change the battery. The KEY FOB BATT LOW message in the vehicle's DIC will display, if the remote keyless entry transmitter battery is low.

Notice: When replacing the battery, do not touch any of the circuitry on the transmitter. Static from your body could damage the transmitter.

To replace the battery do the following:

1. Insert a flat object with a thin edge into the notch, located below the Vehicle Locator/Panic Alarm button, and pry the front and back apart.
2. Remove the old battery, but do not use a metal object to do this.
3. Slide the new battery into the transmitter with the positive side of the battery facing up. Use a type CR2032 battery, or equivalent type.
4. Snap the front and the back of the transmitter together.
5. Test the operation of the transmitter with the vehicle.