Maybe you need to read your contract on warranty platinum coverage before you call your dealer scumbags cause you didn't get your way on your 1st post. It's a wear item.
GM Platinum coverage does not cover the following:
Batteries and cables: Batteries, battery cables, and battery harnesses
Lenses, lights, and bulbs: Lenses, sealed beams, and light bulbs
Key fobs and tire pressure sensors: Key fobs and tire pressure sensors
Brake rotors and drums: Brake rotors and drums
Exhaust components: All exhaust components, unless specifically listed as covered
Trim items: Trim items
Tires and wheels: Tires and wheels/rims
Maintenance services: Routine maintenance services
Modifications: Modifications to the frame, suspension, engine, transmission, or drive axle
Odometer: If the odometer stops working or is altered after the contract is purchased
Salvaged or rebuilt vehicles: If the vehicle has been salvaged, rebuilt, or is a gray market vehicle