The 08 plugs right in. Well it did on my 05. You will need to have it programed with a tech 2 at a dealership to your vin though. Dealership can be free all the way up to $80 to do that. So shop around. There is a HOW TO on G6performance if the service tech doesnt know how to do it. It will walk him though it on the tech2.
I dont remember the plug setup on mine... Maybe I took a snap....its been a few years. lol
I dont remember the plug setup on mine... Maybe I took a snap....its been a few years. lol