2004 Pontiac Grand Prix Owner's Manual - Page 70

Battery Replacement Under normal use, the battery in your remote keyless entry transmitter should last about three years. You can tell the battery is weak if the transmitter won't work at the normal range. If you have to get close to your vehicle before the transmitter works, it's probably time to change the battery. To replace the battery do the following: 1. Insert a flat object like a thin coin into the notch located on the front of the transmitter, below the open trunk button, and pry it apart. 2. Gently slide the battery out of the transmitter. Do not use a metal object to remove the battery. 3. Slide the new battery into the transmitter. Use a type CR2032 battery, or equivalent type. 4. Snap the transmitter back together, making sure the halves are secured tightly, so water will not get in. 5. Test the operation of the transmitter with the vehicle. If the transmitter does not work, resynchronize the transmitter. Notice: When replacing the battery, use care not to touch any of the circuitry. Static from your body transferred to these surfaces may damage the transmitter. Resynchronization If the functions on the remote keyless entry transmitter do not work, or, if only the remote alarm works, after the battery is replaced, then the transmitter needs to be resynchronized to the receiver. Do this by pressing and holding the LOCK and UNLOCK buttons on the transmitter at the same time for about eight seconds. You must be within range of the vehicle. Once the transmitter has been resynchronized, the horn will sound and the exterior lamps will flash once. The system should now operate properly. 2-6