4l80E and slipping reverse?

[bezerk]

I have a 4l80E in my chevrolet k1500 6.5TD (1995 with 150K miles).
when i put it in reverse the truck backs up, but as soon as i hit the gas, or when it's pushing a trailer,or backing up against a hill, it will slip.
when i put it in lower gearing, it becomes alittle bit better.

To me it sound like the reverse cluthes are burned, but could it be anything else?
as far as the rest of teh transmission, it shifs good and firm.
Maybe this should be in the offtopic, but hey, alot of people doing a 4l80E swap so...

Thanks

 

[nightdiver]

Re: 4l80E and slipping reverse?

How is the condition of the atf ? Got any dirt at the pan ?
Ok... how much do you want for it ?

 

[bezerk]

Re: 4l80E and slipping reverse?

How is the condition of the atf ? Got any dirt at the pan ?
Ok... how much do you want for it ?

oil looks good..
haven't pulled the pan yet...but sounds like a good plan.
And can't sell it,
i got a freshly rebuilded 700r4 though, i would be happy to sell:rotf: