1999 GMC Yukon Service Questions

1999 GMC YUKON
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RANGE RIDER
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  • 1 POST
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?
Jul 13, 2007 at 9:51 PM
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CHEVY22
  • ✓ASE Certified Mechanic
  • 1,375 POSTS
  • ASE Certified Mechanic
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
Jul 14, 2007 at 10:25 AM
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