Quote Originally Posted by dsmuts View Post
It sounds to me like your trans is slipping into OD Take a video of it and we could tell you for sure. Mine used to do that before i got a tune.
That's what I thought at first, but wouldn't it do it when I waited til I got to 50 to put it in drive too then? It's very consistent at only happening when it is in "D" when it hits shifting speed. It doesn't do it at all if I start in 3rd and shift it myself when it gets to 50.