I have a 2007 uplander with 85k miles. with van running, I turn then steering wheel all the way to left or right and kind of bounce the steering wheel to that side, I get a pretty big clunk. I can hear front end clunks going over bumps as well. Bad rack and pinion or intermediate shaft? does anyone have any schematic, videos or know hows to change rack and pinion and to change/lube up intermediate shaft? any help would be greatly appreciated. I cant find any info at all. thank you