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*How to check for a possible bent rear axle?

This is a discussion on *How to check for a possible bent rear axle? within the Technical / Maintenance forums, part of the General Discussion category; My truck started to vibrate and bounce in the rear while on the highway. This was much more noticable on ...

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    *How to check for a possible bent rear axle?


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    My truck started to vibrate and bounce in the rear while on the highway. This was much more noticable on concete than on pavement (i think this is because of form setting of the concrete). Anyway, I have 135k so i changed the shocks to bilstein HDs and the problem still persists.
    I'm thinking its a bent axle shaft but I don't know how to find this out for sure... is there anyway to check this?
    And, if it is the axle shaft, how much is it to replace?
    2002 Silverado 1500 4.8L w/Z71 Stock

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    JUGS Racing SuperStepside's Avatar
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    Re: *How to check for a possible bent rear axle?

    Put the rear end on jackstands. Put the truck in drive and watch the rear wheels. See if they're wobbling.

    1995 350 "Tool Box Injection"
    Going 4/6 with 20" Billet Specialties

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    Meat Popscicle Phaedrus's Avatar
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    Re: *How to check for a possible bent rear axle?

    Pull the driveshaft and check u-joints. I'm willing to bet your rear joint is locked up.

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    Re: *How to check for a possible bent rear axle?

    Chances of bending an axle is slim to non, there hardened and will break first. Check for bent and out off balanced wheels.
    04 K1500 Silverado EXT 3:73 gears, 5.3L 265/75-16,Pace Edwards tonneau,

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    Re: *How to check for a possible bent rear axle?

    hit any potholes lately? could be a broken belt in the tires

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    Registered User J45p3r's Avatar
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    Re: *How to check for a possible bent rear axle?

    Quote Originally Posted by Phaedrus
    Pull the driveshaft and check u-joints. I'm willing to bet your rear joint is locked up.
    I'm going with this. My grandfathers truck had the same symptoms as yours and he had a seized rear u-joint.
    2003 GMC Sierra, ECSB, Z71, 5.3L, 285/75R16 BFG A/T KO's, K&N KIPK, Magnaflow Catback #15792, Wait4Me 87/89 Tune

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    Re: *How to check for a possible bent rear axle?

    I'd vote tires first...maybe ya threw a weight, broke a belt.

    I agree that bending an axle is rare...even if you bent the flange, I'd bet the wheel itself would bend first. At any rate...if you bent a wheel, axle, etc...you would definetly remember the event that caused it.

    K.I.S.S. count on the lowest tech, simple stuff to fail first. Lost a weight, separation, broken belt...failed shock even.

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    ALL IN BALLS OUT wp silverado's Avatar
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    Re: *How to check for a possible bent rear axle?

    i agree put it on stands and put it in drive, determine what side and check your tires. if you cant limit it to a side, put it back on the ground and grab the drive shaft and twist it to see if theres play in the u joint. if you find no problems with these two checks you have a more serious problem in your rear.

 

 

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