Hoping you guys can help with the latest twist on my 2004 Yukon. Proud original owner! I've got no power assist, and a burst line that looks to be the cause. If you look at the attached pic, it's the line going in to the steering box to the right of the steel line also heading in to the box, with another line to it's right. Hoping you can tell me what this line is, where does it go, and how hard is it to replace? Thank you all as always.