Author Topic: 1984 GMC K1500 SM 465 shifting issue...  (Read 1736 times)

Offline ArmourK1500

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1984 GMC K1500 SM 465 shifting issue...
« on: January 01, 2016, 02:34:36 pm »
I have a SM 465 in my truck. The issue is when the truck has sat overnight, it shifts very well into reverse and thru all the gears while driving. But after a couple hours of running errands, stop here and there, it starts to have a hard time shifting into reverse and into gear while driving. I thought it was my clutch pedal bushing since I had so much side to side play that was causing the shifting problem. After replacing the bushing and test driving today I still have the same shifting problem. What can I check? Mechanical Linkage next? Thanks and Happy New Year

Offline Captain Swampy

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Re: 1984 GMC K1500 SM 465 shifting issue...
« Reply #1 on: January 01, 2016, 06:36:51 pm »
Try changing the oil. I recommend Amsoil, but any good quality oil will work. Maybe the input bearing is worn from the bad pilot bushing?
1987  350TBI 700R4  4X4  4.56 gears  33" BFG All Terrain


http://forum.73-87chevytrucks.com/smforum/index.php?topic=32209.0