Hello, I am new here and looking for anyone with info on installing an aftermarket remote start on a 2008 9-7x. I have had some people tell me I need to give up a key and some say no. this makes it a little confusing. I have done several remotestarts in the past so I may decide to give it a shot if I could get any wiring info also. I have been told it's the same as a trailblazer except with passkey 3. thanks in advance for any help.