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Old October 13th, 2009, 09:54 AM   #1
clarkstoncracker
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Default GMC Yukon, noise while turning.

4wd of course.

Whenever I turn left I have what feels to be a grinding noise from the front left. It doesn't ever make the noise while going straight. If I turn really sharp going really fast the noise is very very bad.

My question is, CV or Wheel Bearing?


If its the CV, how much of a PITA are they to swap?
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Old October 13th, 2009, 10:13 AM   #2
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CVs are not that hard to swap.

If it's a wheel bearing, you should be hearing the noise in 2WD too, and should be louder when you turn to the right and more weight transfers to that bearing.

By you turning very sharply to the left and the noise is getting worse, my money would be on the CV. If it's a wheel bearing, the noise should not be as pronounced when turning left.
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Old October 13th, 2009, 10:19 AM   #3
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Awesome. thanks

Wonder if I should just swap out both..
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Old October 13th, 2009, 10:23 AM   #4
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Depends on how long you plan on keeping it.
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Old October 13th, 2009, 11:06 AM   #5
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What's your speed during said turn?
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Old October 13th, 2009, 01:08 PM   #6
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Quote:
Originally Posted by clarkstoncracker View Post
Awesome. thanks

Wonder if I should just swap out both..
What year and how many miles? If it's over 100,000, I'd just do the wheel bearing too. You can either get the CV out through the knuckle, or you may have to swing the entire knuckle out of the way.
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Old October 13th, 2009, 05:10 PM   #7
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Pretty easy way to check both

Check the cv by grabbing a hold of it and wiggling it around, it should move in and out of the hub, that's why it's called a constant velocity shaft lol, but there shouldn't be any other play in it at all, there shouldn't be any up and down or front to back movement in it

Check the wheel bearing by jacking up the front of the yukon, grab a hold of the front and back of the tire and try to wiggle it, if there's any movement in it then it's the wheel bearing, also if it's bad just turn the wheel, if there's excessive noise that doesn't sound like a brake rotor, again, it's the wheel bearing

could be both too
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Old October 13th, 2009, 05:12 PM   #8
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Quote:
Originally Posted by GreaseMonkey View Post
What year and how many miles? If it's over 100,000, I'd just do the wheel bearing too. You can either get the CV out through the knuckle, or you may have to swing the entire knuckle out of the way.
to get the cv out all you have to do is just unbolt it from the hub (big ass locking nut) unbolt it from the half-shaft ( i think 6 bolts?), and either take off your sway bar link or the shock, with both those in place there isn't room for the cv to pull out or for the new one to go back in. The shock is usually easier, since the you have to reach your fingers through a small opening to get the sway bar link back on
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Old October 13th, 2009, 06:58 PM   #9
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I would just soak it up in a RED food dye for a day or so and they should be as good as new! :)
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