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1999 GMC Yukon Service Questions

Tiny
RANGE RIDER
  • MEMBER
  • 1999 GMC YUKON
Make: GMC
Model: Yukon (Automatic, 4WD)
Year: 1999
Mileage: 140,000+
Engine Size: 5.7L V8

My GMC service manager said my Yukon has a front pinion seal leak and a transmission tail shaft seal leak. What are the indications of a leak or what might some indications that I have a problem that needs servicing since I never see any evidence of leaks on the ground or in my garage? Can these problems be easily resolved by a non-mechanic like myself or better left to the experts?
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Friday, July 13th, 2007 AT 9:51 PM

1 Reply

Tiny
CHEVY22
  • MECHANIC
  • 1,375 POSTS
Both seal if bad will sling fluid on the underside and you may not see a leak, but if you climb under it you may see what the shop was talking about, if youve never done a u joint or pinion seal you may want to leave it up to the shop, you will need a large socket for the pinion seal and air tools, hope this helps
jim
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Saturday, July 14th, 2007 AT 10:25 AM

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