well like i said its the upshit solenoid so i was told by the transmission guy at the local diesel shop i haven't yet taken it apart myself but ill try and get pictures when i rebuild the tranny to show the prob. and let yall know how i fixed it. whats going on now is it will start and idle great, when i put it in drive it starts to pull but if i slam the gas it bog's out and barely runs also has real trouble accelerating especially up hill, if i ease into the gas sometimes it will get up to 60 65 ish but its still sluggish