1996 GMC Jimmy Owner's Manual - Page 63

Matching Transmitter($ To Your Vehicle Each key chain transmitter is coded to prevent another transmitter from unlocking your vehicle. If a transmitter is lost or stolen, a replacement can be purchased through your dealer. Remember to bring any remaining transmitters with you when you go to your dealer. When the dealer matches the replacement transmitter to your vehicle, any remaining transmitters must also be matched. Once the new transmitter is coded, the lost transmitter will not unlock your vehicle. Each vehicle can have only two transmitters matched to it. To replace the batteries in the Keyless Entry transmitter Battery Replacement Under normal use, the batteries in your key chain transmitter should last about two years. You can tell the batteries are weak if the transmitter won't work at the normal range in any location. If you have to get close to your vehicle before the transmitter works, it's probably time to change the batteries. 1. Insert a dime in the slot between the covers of the transmitter housing near the key ring hole. Remove the bottom by twisting the dime. 2. Remove and replace the batteries with two Duracel1'-type batteries (DL20 16 or equivalent), positive side down. 3. Align the covers and snap them together. 4. Check the operation of the transmitter. 2-6