Join Date: May 2011
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Your u-joints might be chewed up internally and still be tight.
The bearing assembly of the u-joint may have notches instead of a smooth surface. As the u-joint is forced to work during a turn this idea would make sense. Picture the needle bearings in a case that has cutouts the same size as the needles. When you turn the needle falls into the groove nicely. Then when the needle hits the uphill part of a groove it struggles to go over that hump. That would make a jerking and a vibration.
Naturally this can happen to any bearing. It is not just limited to u-joints.
I would tend to rule out the tires. They should not be a cause of noise at low speeds.
1997 3500 club cab 3.54 gears towing & camper pkg. Still stock with a built transmission at 120k. 4" exhaust, 4kgsk, and exhaust brake waiting for installation. 37337 upgrade. Still need ideas for improvements for hauling 15k fifth wheel.
Last edited by country_hick; 06-29-2014 at 10:37 PM.