after the truck goes through the gears and gets in overdrive it start vibrating and shaking. if you turn the overdrive button to off it quits. it has new universal joints and new tires. not sure whats wrong with it.
Sounds like your overdrive band internal to your transmission is defective or worn. Your torque Converotr can also cause this issue. That means you have to open the trans, so it's time for a rebuild.
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