73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Projects Posts (NOT VEHICLES) => Topic started by: jasong on November 30, 2013, 06:36:37 pm
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Ok you muncie guys, so here is my trouble, while elk hunting, I backed up my truck (1989 V3500 4X4, 454 tbi, muncie sm465 with 205 transfer case) and parked while I glassed the hill side. I then headed up the road a ways, I did not notice anything wrong at that time but when I got going and tried to shift into third gear, it would not go. >:( I then found that I had no third, fourth, or reverse, first and second still worked just fine.
I limped the truck home and got the tranny tore out and apart, everything with the exception of third gear looks brand new. Third gear is worn down a bit from being ground while still moving forward apparently, this truck was a construction rig before I purchased it. I cannot find anything that looks to have caused this, I was going to rebuild it however I don't know what needs to be replaced and I don't want to rebuild it and find that was not the problem. I have talked to several of the local mechanics and they don't seem to know what might be wrong or just don't care, Any help or suggestions would be greatly appreciated. :-\
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Those transmissions are almost bullet proof. But they are not indestructible. It sounds like the previous owners abused it by shifting without the clutch.
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Ditto on the above.