ballencd, I know this is late but I had the same issue with my 1991 GMC Jimmy. Transmission fluid leaking from top of transmission. Finally found the issue. The detent cable going into the top of the transmission has a seal. Mine was bad so I replaced it. But it kept leaking. So I had to replace...
Well this is my first post and I was trying to post this in the classified section but was limited due to being a newbie.
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1983 Chevy Crew Cab 4x4 (i think 454). I believe 6" lift with 35"s...