It would make sense to me that when in OD there is not as much torque on the drive train taking tension off of parts allowing any unbalanced or sloppy components to kind of do what the want . I don't think it is in the tranny, sorry to contradict you squirrels but I don't know how that would make the truck shake if something in the tranny was that bad I would think that the truck would not be shaking but in the back yard wating for my taxes. Sounds like a suspension issue, go figure. Maybe drive line. I have the same issue, and just found that both my upper and lower ball joints are gone on the drivers side but mine is more than likley tire balance. Or worn out front end parts.
Last edited by estech2; 12-18-2009 at 10:55 PM.