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... read full review »