I have a 2011 Ford F-150, and since we bought a year ago it's always felt somewhat unstable over uneven pavement. The truck tracks straight on the highway, doesn't have any vibration, but anytime I hit a bump on the road I can feel the steering wheel go extremely light. it's to the point where I have to drive with both hands on the wheel almost at all times because if I'm going one handed into a turn the wheel goes so light that my hand drives the steering wheel down unintentionally (not sure if that makes sense?) It's been to the Ford dealer 3 times, and they always say they can't replicate the problem. I've asked them to do a front end inspection, and they promised they couldn't see anything. However, I've driven many things in my life and know that this is not normal... Could it be a suspension issue? truck currently has almost 70k on stock shocks. I've tried different air pressures in the tires, and nothing has changed.
Any help would be greatly appreciated!!!