Power Steering Fluid problems of the 2008 Buick Lacrosse

There is a ntsa service bulletin id # 10024713 related to a power steering leak caused by a defective part or design. The bulletin recommends a tie down strap to prevent hose wear and resulting leakage of fluid. Loss of power steering and/or damage to the power steering unit can result from this leak. I believe Buick has been aware of this problem for some time. I question why gm did not recall all vehicles with this problem to replace the worn hose and attach a tie down strap before leakage was found. Loss of power steering can be a safety issue, as seen with the current ignition recalls. Gm is not providing any extended warranty on this defect.