Question about 2000 GMC New Sierra 1500

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Noisey rear gears...only after 258,000 miles

I love my 2000 GMC Sierra. The rear gears are "singing" and I hear it better to just change the whole rear axle assembly with a used one than to try to rebuild this one with 258,000 plus miles on it. I never tried it before. Is it easy enough? Any tips. I think it's a GU6 rear axle.

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Hello wwlum, well in some ways the change out is easier especially if you are not familiar with this repair, have you checked anything to do with the differential,like check the oil, have you tried to see what kind of movement is at the pinion? I believe this is an integral type diff,have you removed the cover? hear is where you can see wear or pieces and can gauge gear slap you can buy a gear set if needed but car must be given to the installation as shimming may be required see what you think and let me know,see if we can figure this out for you,good luck

Posted on Nov 11, 2008

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