I spent countless hours on trying to get this to work. I even bought the T-harness to make the install easier. The T-harness only hooks up the remote car starter part of it. I was under the impression that it would hook up everything just to find that it doesnt. I also bought a bypass for the anti-theft system. I put this system in but couldn't find the power lock wires that I needed to. So I went ahead and figured I could go without the locks. This is where it got interesting. After spending hours and getting everything hooked up,I pushed the start button. The Trailblazer started........and shut off. Tried it again and the same thing happened over and over. Well went to the computer and found that the $120.00 bypass module I got needed to be reset because it was giving me a code. Huh,no problem,went through the list to reset it and got to the next to last step. You need to hit the lock/unlock button. Remember me saying I didn't wire the locks. I went back hooked the lock wires from the remote starter to the bypass module. Went through the reset list and nothing happened. After a hour of trying to wire this and that I came to realize that it must have to go through the anti-theft system itself and I couldn't find those wires to wire it up. I called support and left messages to which I still haven't heard anything yet to date. I emailed support and still haven't heard anything yet to date. All in all,I spent $240.00 for complete junk that I counldnt get to work. I also spent hours on the computer doing research because their directions suck and aren't clear. If you have no expereince in automobiles or wireing STAY AWAY from this crap. Its nothing more than a headache. Remember nothing is universal!