Turns out out is the t case. In lock up input and turbine almost mirror eachother, 3-6 RPM difference.
Bringing rpm up against brakes, truck not moving at all.
Output shows varying rpm up to 120.
Thanks for input just picked up the truck yesterday it has 226k miles so i fully expect some work needed. But only paid 6k for the truck stop that's ok.
P0700 and p0729 are only two. Thanks any direction is appreciated. This is my first diesel with a auto.
Prefer manual but this truck was a amazing deal.
If cruise is off I can let off the throttle for a second and then keep on going.
It only "jumps out" for a second . If tcase was going to neutral wouldn't it be longer than that?