I have searched the forum and havent found what I wanted. I have an 05 lly w/ an Ally and a Predator on a 65 tune. I have noticed the tranny sees to slip going from 2 to 3 and then quickly goes from 3 to 4 with light peddle. It does this when the tranny warms up, it feels good shifting when the truck is cold. I just changed the fuel filter thinking it may be the problem. Any help would be appreciated.

Paul

No one?

I have the same year and tuner but no problems. :confuzeld

It sounds to me like you have slipped the tranny. And at this point the only option is repair & upgrade tranny for added hp. By the way I'm in the same boat. I have slilpped the tranny & can tell it when warn. :(Just have to be nice to tranny until have cash for rebuild.:D