Question about 2002 Chevrolet Silverado 1500HD

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Bad vibration in truck, not so much in the wheel but it's hard to tell. Starts around 30 to 40 mph and continues till 50 mph. A mechanic friend told me it may be the u-joints and/or (drive shaft) hanger bearing. Any help would be appreciated. Thanks, Mike

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  • mbmmeaney Apr 21, 2011

    Thanks guys for the feedback. I got it up on a hoist and checked carrier bearing seems ok Checked rear u-joints all ok. Checked intermediate shaft and the joints are bad tried to remove but couldn't get it out of the differential seems to be seized. Any ideas on how to proceed? as I don't want to damage anything else (if possible) when removing. Thanks in advance.

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Your friend seems to know his stuff. You can go under the truck and inspect the drive train. With the truck rear up on stands, put the transmission in neutral and grab the drive lines. Rotate them and check for loose u-joints and signs of wear. The same with the hanger bearing. The older models had a grease fitting that could be serviced. Others are sealed and if loose need to be replaced. Good luck, Don

Posted on Mar 22, 2011

  • Donald Tucker Apr 21, 2011

    http://www.automotix.net/autorepair/diy/... this link might be of help with a diagram to get the drive line off. The ones I'm familiar with have splines at each end and can be tapped off with a block of wood and a Mallet. There are some that have a nut and press fit at the differential too.

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That was good advice, it does sound like a u-joint, on these trucks the best way to check the joints is to remove the drive shaft, and flex each joint by hand to make sure each has free movement.

Posted on Mar 22, 2011

Testimonial: "Thanks for your info. I tried to remove the front shaft but it seems to be seized. Any ideas on what to do?"

  • john nail
    john nail Apr 21, 2011

    you should be able to just tap on it to get it to reless.

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Hi and welcome to FixYa!

In my opinion it can really be the u joint and hanger bearing. They tend to worn out when aged. Once replaced you'll be good.

Hope this helps and thank you for using FixYa! Have a good one!

Posted on Mar 22, 2011

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Sounds to me it could be your carrier bearing or ball joints.it could be any of above also. good luck

Posted on Mar 22, 2011

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