Question about 2002 GMC Sierra 1500

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I have a 2002 gmc sierra. when i put it in gear,

I have a 2002 gmc sierra. when i put it in gear, the drive shaft clunks at the rear axle, then makes another 1/2 revolution. when i drive around corners and turning, there is a clunk noise coming from the rear end. should i just take off the rear axle cover and see whats going on back there??

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  • chownewfound Apr 18, 2009

    this solution was very helpful, although it confirmed what i didnt want to hear. Thank you so much

  • Anonymous Mar 18, 2014

    removing rear axle shaft

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  • GMC Master
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If you have that much play back there, first check rear universal . If play is present in pinion with shaft removed, you will not be happy with what you find inside the cover.1/2 turn of lash in any gearset is far beyond the scope of any adjustment. Rebuilding is an exact science and must be done with special tools and lots of experience.
With any luck the u joint is bad...

Posted on Apr 18, 2009

  • Richard Scordino Apr 18, 2009

    I hate when that happens...check joint anyhow...you may luck out. Rather than new, consider a junkyard rear, drum to drum. If 4x4, make sure you match the exact ratio or you will have a large problem.
    (ratio is ring gear teeth divided by pinion teeth. expressed as something like : (3:70:1) Meaning pinion turns 3.70 times for each one turn of ring gear)
    good luck!!


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