So thank you all for your replies. I had a mobile mechanic come out and yes, that Former friend broke a part of my steering where the ignition fits along with the ignition. As soon as I was able, he finally finished installing it all! That 'non-friend' is still in jail hopefully looking at 20-chomo. Dec 1st his dog, that animal control Refused to take twice, mauled my left arm while I was dragging him off my smaller dog. I had 2 surgeries in 5 days, but theysavedmy arm. This is my world. So now the new keys are "coded" and AutoZone tells me that since I have security system on my truck, I need to have it programmed. Just got off the phone with an auto locksmith who tells me that the 2000s have a different system than the newer ones and doesn't require programming keys. My original keys didn't have chips on them so I'm thinking he may be right. If someone can Please corroborate this or not I'd appreciate it!! 2000 Tahoe LS 5.3l Vortec.