1995 GMC Sonoma Owner's Manual - Page 54

Your transmitter housing snaps apart for ease in battery replacement. To open the housing: 1. Insert a dime between two halves of the transmitter housing near the key ring hole. 2. Remove the bottom by twisting the dime. 3. Remove and replace the batteries with two Duracell @-type batteries (DL2016 or equivalent), positive side down. 4. Align and snap together the back and top transmitter housings. Theft Vehicle theft is big business, especially in some cities. Although your vehicle has a number of theft deterrent features, we know that nothing we put on it can make it impossible to steal. However, there are ways you can help. Key in the Ignition If you walk away from your vehicle with the keys inside, it's an easy target for joy riders or professional thieves - so don't do it. When you park your vehicle and open the driver's door, you'll hear a chime reminding you to remove your key from the ignition and take it with you. Always do this. Your steering wheel will be locked, and so will your ignition. If you have an automatic transmission, taking your key out also locks yourtransmission. And remember to lock the doors. 2-8