cfdlighthouse
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Hello i am new to the forum, i just purchased a 1991 2500 suburban 4x4 has the 350 and the 4l80e transmission. I am at a loss the transmission shift fine when cold, i drive 7 or 8 miles and everything comes up to operating temp and the transmission stops shifting, motor just revs....if i let it cool down a couple hours i can drive another 7 or 8 miles and it does it again.
Changed fluid and filter, no metal in the pan. Fluid was clean and not burnt. Replaced the speed sensors and no change and replaced the two shift soleniods and no change woth that either. I just dont understand why it stops working once hot. Its winter time here in va so i can make it almost 12 miles now that morning temps are in the 30s.
Please help
Thanks
Dan
Changed fluid and filter, no metal in the pan. Fluid was clean and not burnt. Replaced the speed sensors and no change and replaced the two shift soleniods and no change woth that either. I just dont understand why it stops working once hot. Its winter time here in va so i can make it almost 12 miles now that morning temps are in the 30s.
Please help
Thanks
Dan