The only other thing I have to add is that I just do not understand why you would even attempt to use Louis for contacting GM instead of making sure to contact the regional rep for your location first. Dealerships choose what warranty work they want to do, but the final say on warranty repairs is held by GM corporate. The first step when a dealership denies a claim is your regional rep, then if not satisfied with that response you then go above their heads. When it comes to safety recalls, or even something like a throttle body, if it is covered in the written warranty then they have to PROVE that you do not qualify for the coverage. They can't just decide not to do the work because they are in a bad mood or having a bad day. In most cases, due to the Moss Magnuson act, it takes major aftermarket modifications or running lubricants and filters outside of the recommended weight and viscosity recommended by said manufacturer before they can deny a claim on a covered part on a vehicle that is still within the warranty coverage mileage and time limits. Otherwise, if what was stated about the denial of the claim actually took place as stated, then you have grounds for civil action against GM. But honestly, what was stated as happening has kind of bounced around throughout the thread and I have my doubts about the way things actually went. I have seen customers in the past at dealerships as well as face to face talking to me that talked themselves right out of me or the dealership doing anything for them as a direct result of their attitude toward the folks they are trying to get help from in the first place. ((Those folks are often people that hold some type of public office or have some kind of other, what they consider special, standing in the community that gives them a false sense of being above others in their communities.))
But the fact remains, even if the dealership doesn't want to do the work for whatever reason, which is within their rights to choose; GM must still warranty a covered repair on a non upgraded vehicle that has been properly maintained and is within the coverage limits set forth in the original contract. When GM denies a claim due to the proper reasons, they "Flag" the VIN of the vehicle and as a result, after that, NO dealership will be allowed to warranty the vehicle under the factory warranty guidelines.