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4l80e o.d. problems BRYAN 9-6-09  
Sometimes it works for ten minutes or so, and sometimes it dont. at about 50 mph it should shift into o.d., solenoid?? fixable at home??
Re: 4l80e o.d. problems BUBBA THE BUS TECH 9-8-09  
Drop the oil pan and see how much of the clutched and gears are in the pan. If there is no metal evedent as metal flake in the oil, it may be a control problem. If the pan is full to the point it is plugging the filter it need an overhaul. Good Luck
Re: 4l80e o.d. problems mike 11-26-10  
I have 97 gmc 1 ton box van 454 with 4L80E changed fluid and filter some time it will shift into OD and be alright but if it downshifts out of OD will not go back in most of the time it will not shift into OD changed both sensors could this be a touqe converter prob?
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