Purchased a GM Certified 2005 Pontiac G6 from Pat O'Brien Chevrolet, home of the Upfront Guarantee. Was told multiple promises by sales that service never followed through on. Sales manager Cliff Weber is now stating that his sales department never stated the points of contention. Sales stated that I could subscribe to On Star and that it was working. Months later after the sale, GM stated On Star will not work without a full year subscription and a nominal fee to upgrade the equipment to digital. If the promised device was on the vehicle, a monthly subscription and no fee would be required. Second point of contention, all 4 tires would new refilling throughout the subsequent months. This was causing the car to pull left. The dealer fixed 1 tire for which we paid. They then did a front end alignment. The car still pulled left. After the dealer failed to provide on their Upfront Guarantee, the car was taken to a tire specialist shop. One new rim and tire, 4 new stems, and grinding on all 4 tires were required and performed (even the tire the dealer was paid to fix). Went to the Better Business Bureau stating my objections and requesting a copy of the 117 Point GM Certified. After subsequent explanations, the dealer stopped working with the Better Business Bureau and never provided me the 117 point inspection copy. Per a copy of the inspection list, http://www.gmcertified.com/certified/whatis/index.jsp?deep=inspection#view_full the dealer is required to check the tires and On Star. I believe the dealer never performed the inspection. If they had, they would have found the issues with the On Star and the tires and corrected them prior to sale.