my truck has no idler arm (hi-steer).

this is way worse than anything that could be caused by tires being out of balance. ive run unbalanced tires before, and its not nearly this bad.

also should have mentioned ive probably only got about 1000 miles on the SAS. meaning everything is new. wheel bearings are new and adjusted properly. tie rod ends are new. spring eye bushings are new.

i aligned my truck last week, and my caster angle is actually a bit higher than spec. seeing as low caster would cause a wobble, i dont think thats the problem. also my caster has not been changed. actually nothing has been changed, this happened all of a sudden....