Question about 2004 Chevrolet TrailBlazer

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04 trailblazer front wheels grind after using 4wd?

Front wheels grind after using 4wd, front left wheel wants to lock up when 4wd is engaged. When switched back to 2wd frnt wheel seems to have some resistance on it and there is grinding noise, I can;t tell if it is from both wheels or just one.

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  • Chevrolet Master
  • 1,311 Answers

You probably have a front drive splined disconnect assembly that has gone bad. This assembly engages the front differential when 4WD is selected. Below is a figure of the item, it is on the passenger side of the differential area.

04 trailblazer front wheels grind after using 4wd? - 1_2_2013_8_18_37_pm.jpg

Posted on Jan 02, 2013

  • 1 more comment 
  • Josh Jan 02, 2013

    Thank you very much Freddy! I just went out and lifted the front end up took both tires off, right wheel spins without much resistance and no noise. But the driver side has alot of resistance and anoise coming fromthe point where the inner cv jointattaches to the differential. Would this be from what you suggested or is it the cv jointor something else? Thank You

  • Josh Jan 02, 2013

    I was thinking it might be the CV joint/axle, or is there a bearing to go bad in at the point where the axle and differential meet?

  • Freddy Jan 03, 2013

    Yes, there is an inner bearing as well as the differential gears. Sounds like a disassembly will be needed.

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Posted on Jan 02, 2017

  • 24 Answers

SOURCE: noise when in 4 x 4

Bad news... It sounds like you have a broken/stripped axle. I would start at the wheel and start disassembling from the outside in. It may just be a stripped spline in the spindle.

Posted on Feb 09, 2009

MrScary66613
  • 1990 Answers

SOURCE: 9Z71 grinding in 4 WD

That Sounds a lot like you have a Gear Broken off inside the Transfer Case. Not a Cheap fix or Easy Either But, Necessary

Posted on Jan 24, 2009

  • 6982 Answers

SOURCE: 99 Silverado 4-wheel drive not engaging

It does not seem that sufficient diagnosis was done. No, you cant give a specific diagnosis like that without tearing unit down. It's likely that they told you the most common failure and left it at that. Likely there is a problem with your unit...I think this becomes more of a trust issue than a mechanical one. A second opinion from an independent reputable shop may help but either way, you need to have it fixed. In not using it much, it makes me wonder how it got worn.
good luck

Posted on Mar 19, 2009

  • 1201 Answers

SOURCE: 04 cavalier makes grinding noise in front end

3 things to check:
Worn disc brake pads, grinding against the rotor.
Wheel bearing
cv joint.
You posted grinding gets worse turning to the right, the problem is the driver side wheel, but it would be best to have both wheeles checked.

Posted on Jun 19, 2009

  • 118 Answers

SOURCE: 03 Trailblazer won't shift into 4WD

go to auto zone to pull transfer case code for no charge to costly to guess

Posted on Sep 01, 2009

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