Why is my steering hard to turn after changing power steering pump on my 97 Silverado?

If your steering is hard to turn after changing the Power Steering pump on your '97 Silverado, it could be due to several reasons. First, ensure that the power steering fluid is properly filled and that there are no leaks in the system. Air trapped in the system can also cause hard steering; try bleeding the power steering system to remove any air. Lastly, check the belt tension and condition, as a loose or worn-out belt may not provide adequate power to the pump.