Mechanics

GMC C1500 VIBRATION PROBLEM

1993 GMC C1500

Bad vibration I have a 93 sierra 1500 ext cab 2wd. It had a 4.3 v6 in it with the 700r tranny. I put a 350 4 bolt main and a turbo 400 tranny. Thing was working fine till I noticed a howling noise. I found out it was coming from the carrier bearing.
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Lildirty4300
May 1, 2012.




Need more detailed info on vibration, where is it felt and under what driving conditions?
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Mhpautos
May 1, 2012.
It feels like its coming from the drive shaft when at take off and about 20miles per hr it gets worse and that is as fast as I drove it

Tiny
Lildirty4300
May 1, 2012.
Check uni's, check tail shaft alignment and also for any signs of damage on the shaft, start here.

Mhpautos
May 1, 2012.
I figured it out. My slip yoke was bottoming out in my tranny so I moved the carrier bearing back some. And now now more vibration

Tiny
Lildirty4300
May 2, 2012.
Great!


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