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Bad vibration I have a 93 Sierra 1500 EXT CAB.

Tiny
LILDIRTY4300
  • MEMBER
  • 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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Tuesday, May 1st, 2012 AT 7:06 AM

5 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Need more detailed info on vibration, where is it felt and under what driving conditions?
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Tuesday, May 1st, 2012 AT 7:45 AM
Tiny
LILDIRTY4300
  • MEMBER
  • 3 POSTS
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
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Tuesday, May 1st, 2012 AT 7:12 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Check uni's, check tail shaft alignment and also for any signs of damage on the shaft, start here.
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Tuesday, May 1st, 2012 AT 10:39 PM
Tiny
LILDIRTY4300
  • MEMBER
  • 3 POSTS
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
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Wednesday, May 2nd, 2012 AT 1:41 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Great!
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Wednesday, May 2nd, 2012 AT 2:33 AM

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