First off welcome to the club and enjoy the wealth of information you will find here. Ebay is your friend when it comes to fobs, hopefully you can read the number on the back of yours for an exact match, if not no sweat, you don't say what year AV you have, some AV's had the ability to program the key fob on site, some do not, your owners manual tells you this, if you don't have a key fob at all, just input the year AV key fob example (2004 Avalanche Key fob) after you get it, if your vehicle does not have the learning procedure built in, you will have to take it to the dealer for programming. Best of luck and enjoy that AV
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