In my 2002 Trailblazer, I turned my wheels all the way to the left and did aquick U-turn, at which point I ruptured a CV boot and immediately lost power steering (http://www.chevroletforum.com/m_32167/tm.htm#). There is no visible evidence of the steering problem - the belt is turning the power steering pulley and steering fluid levels are fine and not leaking anywhere. Anyone have an answer for me?