I have a 95 deville 4.9 and I had to replace my trans. I got a tranny from a local pull your own part yard, I got a 4T60E out of a 94 Olds 98 with 33,000 miles I had to change a few things but the trans is great. The only problem I have is at WOT it will not shift into 2nd until 45 mph and it will hit the rev limiter. I dont mind the long first gear, it really pulls and I can really burn the tires and it sounds great with my dual flows. Please help if you have any Idea of how I can remove or increase the rev limiter. Thanks