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4L80E shifting problem


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ekeck
New User

Jul 8, 2005, 4:27 PM

Post #1 of 4 (10114 views)
4L80E shifting problem Sign In

I have a 1996 Chevy 3500 dullaly with the 4L80e transmision. The tranny will pull fine shift great most the time, but sometimes it will act as though the converter has just disengaged. The RPM will race up unchecked and the tranny will not hook back up until I completly let off the throttle. Any ideas? Please help!
Ed Keck


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 9, 2005, 2:37 AM

Post #2 of 4 (10090 views)
Re: 4L80E shifting problem Sign In

First - make sure it's full of fluid and if not find out why!

Next - check color of fluid on white paper. If you don't say "red" then it's probably toast!
_________________________________________
Long retired now


ekeck
New User

Jul 9, 2005, 6:39 AM

Post #3 of 4 (10088 views)
Re: 4L80E shifting problem Sign In

fluid is fine, good red color, level fine what now? The tranny does not slip pulling a load 1st through 3rd. I just don't understand!
Ed Keck


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 9, 2005, 8:29 AM

Post #4 of 4 (10080 views)
Re: 4L80E shifting problem Sign In

Both good signsSmile From here I would take the veh to a reputable trans shop for a test drive and their asessment with the veh in front of them and a quote on a fix. This should be free.

Never hurts to do a check for wiring and vacuum leaks yourself.
_________________________________________
Long retired now




4L80E shifting problem


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