Very good information. Did not even know this truck would have "speed sensitive steering".. So, I just got under the truck and did some looking around. Found a connector on the back of the Power steering pump. Pulled that connector off, drove around, and no more problem! For poops and giggles, i put the connector back on. drove around. Problem was back! So, i think i found my .99 cent fix. Unplug the sending unit to the power steering pump that adjusts the pressure!