I had the same issue on my 2000 LS1.
I replaced the wiper motor myself, it was not hard once you get assess to the motor. I found a replacement motor new on Ebay. I replaced the motor and had not had a problem since that was 40K + miles ago.
I would expect to spend around $400.00-$500.00 to have the work done at a garage.
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Thursday, May 22nd, 2008 AT 10:44 AM