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4L80E shifting problem Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Transmission Problems ekeck New User Jul 8, 2005, 4:27 PM Post #1 of 4 (12787 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 Jul 9, 2005, 2:37 AM Post #2 of 4 (12763 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! ekeck New User Jul 9, 2005, 6:39 AM Post #3 of 4 (12761 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 Jul 9, 2005, 8:29 AM Post #4 of 4 (12753 views) Re: 4L80E shifting problem Sign In Both good signs 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.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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