passenger rear wheel wobbling badly side to side. a guy told me it's the upper control arm. is there anything else that would do this. wheel bearing hub assembly and axle already been replaced.

What is your question?

The steering was shaky at 60 mph now at 20 and 40 and the rear of the suv fish tails when I hit a bump or turn a curve .

How long has your 2004 Mitsubishi Endeavor had this problem?

a few weeks but severe past 2 days