I have a 99 Tahoe, 2wd. Difficult to explain. After I stop completely and begin to proceed. The truck feels like the brakes were stuck and they release hard. You can feel the truck seem to dip or thump in the rear. It does hapen everytime you stop. Universal joints seem tight. Brakes and wheel cylinders have been replaced or checked. Drive shft? Springs? Bushings? Rear end? Ideas?