Ford had a huge issue with that on mid and late nineties trucks. To anyone who has never experienced the feel, it is like a tank slapping wobble, only in your truck. Most of the affected vehicles didn't come with a stock stabilizer; but the installation of an aftermarket one(like Rancho)always solved this problem. You could always tell if that went bad. You'd hit a bump and it'd take the wheel right out of your hands.
