Question about 2002 GMC Envoy

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2003 GMC Envoy: It makes a loud whining noise through acceleration above 20 mph from the rear center of the vehicle. It started out in the 60's and has made its way down to the 20's. Mechanic says the rear differential needs to be replaced. Too much damage to be rebuilt. True?

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Posted on Jan 02, 2017

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SOURCE: differential noise/whine when of 1994 land rover discovery

Sounds Like Pinion Bearings , But Carrier Bearings Should Be Replaced (In My Opinion) as they Could Be Contaminated

Posted on Feb 03, 2009

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  • 7 Answers

SOURCE: Whining when accelerating

IT COULD ALSO BE A BAD U JOINT IF THE REAR HAD NO LUBE IT WOULD BE JUNK BY NOW

Posted on Sep 29, 2008

  • 393 Answers

SOURCE: gmc envoy 2004

sound like poss. speed sensor problem.

Posted on Nov 11, 2008

  • 740 Answers

SOURCE: 1999 GMC SAFARI VAN REAR END HUMMING

This rear end needs to be replace or re-built


































This rear end needs to be replaced or re-built. The gears and or bearings are worn/shot. May be able to get a complete rear end from a Junk yard for much less, one in good condition. Good Luck






Posted on Dec 10, 2008

csmock132
  • 4669 Answers

SOURCE: 1997 Suburban 4x4 5.7L Transmission whines until it shifts

You rear planetary set is worn from a restricted cooler.

Posted on May 06, 2009

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