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Old 08-16-2014, 02:37 PM   #2
LockDoc
The Older Generation


 
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Join Date: Aug 2006
Location: Montezuma, Iowa
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Re: 72 gmc 3500 car hauler hopping badly

Quote:
Originally Posted by pinturbo75 View Post
at about 35-45 miles per hour the rear end hops really bad.... shakes the whole truck...has the big leaf pack with overload pack and no shocks.... any ideas???? thanks. steve....

I would check for a loose wheel, inner or outer. There are two types of wheels that fit the big trucks "hub centric" and "lug centric" if the wrong type of wheels were installed for your setup it could cause that. Also check the tread on your tires and make sure one isn't coming loose from the tire casing..

This is just a couple of things to check. Hopefully others will chime in with other thoughts....

LockDoc
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