Originally Posted By: rubberchicken
I have a 97 K2500, 454 4x4 with 4l80e trans. Although it is a beater due to the paint problems, I do not have problems with the trans, other than this: if it sits for a very long time, it seems to be slow to go into gear the first time, regardless of D or R. It seems to take like 2-4 seconds to go into gear the first time. After that its fine.
Right now its sitting due to a blown front brake line that I will repair eventually. Not sure what I am going to do with it long term.
My 98 K3500 454 with the 4L80E does the same thing. If it sits a long time without running the trans feels like it is slow initially but it does it mostly during the cold weather and not so much during the warmer months of the year.
This truck only has 115,000 miles on it. I did have a guy who had access to the dealer's computer system look up my truck up to see what kind of things were done to it while it was still under warranty and it had a transmission valve body replacement pretty early on in it's life.
A couple of years ago my truck blew the rear brake line next to the gas tank and that was a big pain to replace. Mine sat for several weeks before I got that fixed.