1998 Pontiac Grand Am Owner's Manual - Page 71

To replace the battery the keyless entry system: in 1. Use a small coin flathead screwdriverto separate or the bottom half from the top half of the transmitter. 4. Check the operationof the transmitter with your vehicle. If the transmitter does not work, try synchronizing the transmitter with the receiver. Synchronization Your keyless entry system is equipped with a security system that prevents anyone from recording and playing back your signal. The transmitter does not send the same signal twiceto the receiver. The receiver will not to respond to a signal that has been sent it more than once. To resynchronize your transmitter and receiver, follow these directions: 1. Stand close to your vehicle. 2. Remove the battery and replace with the new one. it Make sure the positive(+) side of the battery faces down. Use one %volt, CR2032, or equivalent type battery. 3. Put the two halves back together. Make sure the cover is on tightly, so water won't get in. 2. Press and hold theLOCK and UNLOCK buttons on the transmitter at same time. the 3. Hold the buttons for five seconds. In this time, the doors should lock and unlock once. This confirms the resynchronization.If the doorsdo not lock and unlock, see your dealerfor service. 2-10