Hello, new to the forum,tons of good info on here, hope someone can help me out.99 yukon denali, power steering pump shaft broke, I got one from o'reilly parts store with the evo thing on the back of the pump. put every thing together, bled system. everything seems to work well except the pump has a really low whine to it(not noticeable unless you really listen)and the pump gets really hot after just a few minutes, hot enough where you can only touch for maybe a second. Is this a concern, do I need to check anything else. any help would be appreciated, Thanks in advance.