Hey guys I have a 96 suburban. Didn't come with key fobs, but has remote module installed from factory and will go into program mode with.pins 4&8 jumped on the obd conn. I tried a couple fobs from Amazon, but I think they're the wrong ones. I've seen people mention fcc id from your old keys, but how are you supposed to know when you don't have any old fobs to go from for the right number?