I have found thousands of complaints about the Passlock Anti Theft System defects. Please take 5 minutes to file a complaint to the NHTS about this matter. http://www-odi.nhtsa.dot.gov/ivoq/
GM does not care about this problem. DO NOT give them anymore of your money. They will not recall this problem. With enough complaints to the NHTS the government will recall this product and make GM fix at their expense.