Ok over the weekend I had some popping/clunking from what sounds like it is coming from either the drive shaft or the front end steering components? Then this morning and this afternoon it happended again, once while pulling out of a parking lot turning front wheels to right, then in my parking garage when I was backing into a parking spot (this time was really loud and shook the front end). Anyone else had this problem? what could it be? I have a 2008 Silverado 1500 Crew 4x4 LTZ.