How to open GMC Terrain key fob?

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Scott L. February 4, 2021
First off, if You need a new battery for the GMC Terrain key fob You will need to pick up a CR2032 3 volt battery. These are very easy to find and You can get them for about $2 a piece or less depending on where You're shopping. Opening up the key fob is very simple and doesn't even require any tools. First You need to hit the button that releases the mechanical key. After that You can grip on the lower half of the key fob and just pull the back part off easily and that's where the battery is located. Simply slide out the old one and insert the new one. -
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Sharon D July 30, 2020
To open a GMC Terrain key fob release and remove the key from the back of the key fob where the key ring is located. The metal key should come out once you slide the switch. Open the key fob. Theres a small opening where the spare key you just removed was. Use a flathead screwdriver to pop open both halves of the key fob.
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