Question about 2003 GMC Yukon Denali

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Whining noise in the drivetrain of 03 GMC Yukon Denali

It feels like the front end is heavy. Poor steering and lack of power. It whines until you let off the gas then it stops. Oil pressure shows a little lower at idle than normal. I have replaced both belt tensioners, both belts, idler pully, and alternator. Help!

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  • Anonymous Dec 30, 2008

    Vehicle makes grinding sound when gas pedal is pushed. no sound when pedal isn't pushed.

  • Anonymous Apr 21, 2009

    same problem when i push the gas it grinds when i let off it goes away on a 03 denali with all wheel drive

  • Glenn Snow May 11, 2010

    Is the power steering reservoir full and the front tire pressures up?

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Posted on Jan 02, 2017

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n_c_713
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SOURCE: getting a high pitched whining sound that increases and decreases with accelleration and decelleration

it is your idler pulley. get it from dealer comes with bracket, just use pulley off bracket. take your belt off and your idler pulley is lower right hand side(facing your engine). 15mm bolt, replace pulley and reinstall your belt. it;s a common problem on trailblazers

Posted on May 05, 2009

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SOURCE: whines in reverse

some vehicles whine in reverse. My 1994 nissan did but was never an issue

Posted on May 05, 2009

  • 72 Answers

SOURCE: 2002 gmc yukon denali ac pump

it has gone bad replace it

Posted on Aug 07, 2009

  • 1 Answer

SOURCE: 2001 olds aurora whining noise

most think of the power steering pump going bad but most likely bearing in A/C pump going bad.

Posted on Jan 02, 2010

  • 1244 Answers

SOURCE: 02 yukon denali has a whining noise similar to bad wheel bearings

the jerking and noise you are experiencing is the drive chain and bearings in the transfer case also you may want to check the end play in both front and rear pinion bearings and yokes

Posted on Jan 22, 2010

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the jerking and noise you are experiencing is the drive chain and bearings in the transfer case also you may want to check the end play in both front and rear pinion bearings and yokes

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