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Thread: to tell the difference?

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  1. #1
    Registered User Crucified's Avatar
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    to tell the difference?

    How do I determine if movement/slack on my right wheel is being caused by a wheel bearing or ball joint(s)?

    I was originally convinced it was the right side upper ball joint but now that is in question...

    Everything I found pointed to the same procedure for checking both?

    "jack up vehicle grab the wheel at 6 and 12, if there is play, you have a bad wheel bearing"

    "jack up vehicle grab the wheel at 6 and 12, if there is play, you have a bad ball joint"


    Determining which is the direct cause is where I am stuck.:confused:
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  2. #2
    Registered User dragnblazer's Avatar
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    Does the wheel wobel or vibrate at highway speeds?
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  3. #3
    Registered User Crucified's Avatar
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    Quote Originally Posted by dragnblazer View Post
    Does the wheel wobel or vibrate at highway speeds?
    I havent noticed anything while driving...just a clunking from the front end when I would go over bumps, the reason I figured it was the ball joints.
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  4. #4
    Registered User dragnblazer's Avatar
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    Try greasing them.
    My project thread 89 bagged 2door
    http://www.blazinlow.com/forum/showthread.php?t=68023

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  5. #5
    Registered User dragnblazer's Avatar
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    My 02 was doing that shorty after I bought it. Greased them at the sound went away.
    My project thread 89 bagged 2door
    http://www.blazinlow.com/forum/showthread.php?t=68023

    Wife's daily
    2002 chevy blazer 4 door 2wd ls

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    2000 Gmc jimmy 2 door 5 speed

  6. #6
    chiefron Ron Christensen's Avatar
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    Have a second person eyeball the ball joints as the wheel/tire is wiggled up and down! If there is no in/out movement of the ball joint then (duh) it's the wheel bearings. Sometime it just helps to have an extra set of eyes or hands. Good luck.

  7. #7
    5.7L VORTEC 350 blazin4low's Avatar
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    if it sounds like you have mud tires on a jacked up truck and you don't it's a bearing

    you can have someone move the blazer and hit the brakes as you look at the spindle, if you see the steering knuckle part of the spindle move up and down as the brakes are applied and let off it's ball joints

    two ways I have found the problem, but I know the 6 and 12 works for bearings, I watched a GM certified tech use that method
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  8. #8
    LQ4/LS1 Turner's Avatar
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    .......... jack up under the lower control arm, grab the wheel at top and bottom and rock it in and out with some force. have someone watch the ball joints, if they move at all they are toast, if they dont move and your wheel still moves its a wheel bearing. also use a good sized bar under the tire while it is still jacked up and pry up and down on the bottom of the wheel and have someone watch the ball joints,with most gm's you are allowed up and down movement but i dont like mine moving at all. and a bad wheel bearing will not always be noisy, ive seen wheel bearings so loose the wheel moves 2 inches in and out and no noise. thread closed.

  9. #9
    5.7L VORTEC 350 blazin4low's Avatar
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    good to know about them moving....only ones I have had sounded like mud tires
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  10. #10
    Registered User Crucified's Avatar
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    Thanks for the input guys. I will look into it tomorrow. Sounds like a second set of eyes/hands is what I really need.
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  11. #11
    Registered User Crucified's Avatar
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    It was the upper control arm bushings...pfftttt.
    Last edited by Crucified; 05-05-2011 at 03:23 PM.
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  12. #12
    Doesnt look like this supernova's Avatar
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    it took me forever to find mine were wore out lol. I thought it was wheel bearings, ball joints, maybe door bushing make a shit ton of noise. Finally when i found part of the bushing in my driveway it dawned on me lol.

    glad you got it figured out and didnt buy a stupid expensive hub first

  13. #13
    Registered User Crucified's Avatar
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    Quote Originally Posted by supernova View Post
    it took me forever to find mine were wore out lol. I thought it was wheel bearings, ball joints, maybe door bushing make a shit ton of noise. Finally when i found part of the bushing in my driveway it dawned on me lol.

    glad you got it figured out and didnt buy a stupid expensive hub first
    Thanks man. I went ahead and replaced the upper ball joint with a moog for now since I had to pull the arm and take it to the machine shop to have the bushings pressed. Hopefully I am good to go now until I find a deal on some control arms or save up $1000 for the ones i want...lol, like that will happen anytime soon.:rolleyes:
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