Recently I was driving down the road when the steering on my 2002 Chevy Trailblazer LOCKED UP, which resulted in a minor crash by driving off of the road. When the truck hit an enbankment, it knocked the wheel free. I searched the net and found one other instance of this happening with a Malibu, and of course the dealer has never heard of it (the same as they never heard of my transmission problem, which everybody has). Has anyone experienced this or have an idea of what happened? Belts are all tight, fluid is fine, etc.