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					Originally Posted by  Deserion
					 
				 
				I'd figure the linkage popped off the joint for the left arm. 
			
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+1 on the linkage, or or the spline holding the wiper blade.  There is a plastic cap at the base of the wiper blade that pops off with a bolt under it.  If the bolt is loose, the spline could slip and the arm won't move.  Either one shouldn't be a big deal.