Power Steering Groan When Turning Left 2001 GMC Youkon

Question: My 2001 GMC Yukon groans when I turn the steering wheel to the left. It’s full of fluid, so I changed out the power steering pump. It still makes the same exact noise. What can it be?

gmc-youkon-2001

Answer: Yes, they’ve actually had some problems with the steering box on those Yukons. The valving inside the box goes bad and can groan when turned to either side (normally they will groan only one way or the other, as usually only one side of the box breaks down and the other works fine–so yours may groan to the left but not to the right.) I’d bet a new power steering box would solve your problem.