My 2000 Chevy Venture has an occasional transmission whine. It also will rpm beyond the normal shift point and then clunk into the next gear. There are no odd symptoms on downshift. If I pull over and turn off the Van, start it back up after a minute or so, it sometimes will be fine.
If not, usually repeating the stopping and restarting will make the problem go away. Anyone else have this problem or know what the cause and fix is?
Answer:Unfortunately the whine noise and the slipping are sign of internal transmission problems. There are several service bulletins for noises and/or slipping that can be anything from debre in the valve body, to a drive sprocket bearing coming apart. You could TRY to have a fluid flush and filter change, but normally would not fix problems. You need to have the system scanned for codes, have a tech look at transmission data, and have him test drive to evaluate the problems. Does not necessarily mean you are in need of an overhaul, but it will have to diagnosed by a good transmission tech.