On top of the pump is a large round cap. Remove the cap to add the fluid. While driving, the steering feedback will go to nothing. Does not affect steering of truck, but this feedback or tension is needed at speed, on curves etc. It is intermittent.
Tire pressure has been checked amd is the same in both front tires.
Power steering fluid is correct level. A power steering control module controls the speed sensitive power steering. Depending upon the speed of the vehicle, it opens and closes an orifice controlling the flow of hydraulic fluid from the power steering pump. The power steering control module will store fault codes that will tell you what component is malfunctioning. The bumper extends beyond the radiator underneath and obstructs it.