1997 Oldsmobile Bravada Owner's Manual - Page 62

Resynchronization Resynchronization may be necessary due to the security method used by this system. Thetransmitter does not send the same signal twice to the receiver. The receiver will not respond to a signal it has been sent previously. This prevents anyone from recording and playing back the signal from the transmitter. To resynchronize your transmitter, stand close to your vehicle and simultaneously press and hold the LOCK and UNLOCK buttons on the transmitter for not more than five seconds. The door locks should cycle to confirm synchronization. If the locks do not cycle, see your retailer for service. Liftgate It can be dangerous to drive with the rear window or liftgate open because carbon monoxide (CO) gas can come into your vehicle. You can't see or smell CO. It can cause unconsciousness and even death. If you must drive with the rear window or liftgate open orif electrical wiring or other cable connections must pass through the seal between the body and the rearwindow or liftgate: 0 Make sure all windows are shut. 0 Turn the fan on your heating or cooling system to its highest speed with the setting on VENT. That will force outside air into your vehicle. See "Comfort Controls" in the Index. 0 If you have air outlets on or under the instrument panel, open them all the way. See "Engine Exhaust" in the Index. 2-8