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1999 Other GMC Models front differential

Tiny
BDTHEKING
  • MEMBER
  • 1999 GMC
  • V8
  • 4WD
  • AUTOMATIC
  • 85,000 MILES
I just replaced pinion seal on the front diffential. In the process I drained the old oil and added new stuff. Today, I took it for its maiden voyage and when you put it in 4x4 (pushbutton) it grinds on the front driver side and it gradually goed away when you take it out of 4x4. This was not a problem before I replaced the seal. Did I screw up or is it a coinsidence?

thanks for your time
Brian
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Tuesday, April 15th, 2008 AT 3:23 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi:
It sounds like the auto hub isn't working. You may want to have it checked by a mechanic if you arn't comfortable removing the assembly. If you only replaced the seal, most likely you did nothing to cause the problem.

Joe
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Wednesday, December 10th, 2008 AT 3:31 PM

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