I just purchased a 97 LSC, and I love it.  But just recently I noticed that the whole wiper system is going crazy.  The wipers turn on when I turn the knob to low, int, and high but the motor is loud as hell!  Is that normal?  In addition, the wipers will not turn off once turned on.  I slide the knob back to off, but they still continue to run for several minutes before they decide to turn off...anyone out there got any answers?  Pls reply.
	
		
			
		
		
	
				
			 
	 
 
		 
 
		