Quote Originally Posted by projectGTP View Post
sounds pretty complicated. lol. would this apply to every car or only GTPs? cuz i did this with my old grand am and never had a problem.
Depends on the transmission. This for sure applies to any car with the 4T65E. Grand Prixs, Impalas, Monte Carlos, Regals, etc. I think the Grand Am has the 4T40E, which I haven't paid much attention to.