TL* THE CONTACT OWNS A 2003 CHEVROLET IMPALA. THE CONTACT STATED THAT THE ENGINE VALVE COVER GASKET FAILED CAUSING THE ENGINE OIL SPILL ON THE MANIFOLD AND EMITTED SMOKE. THE VEHICLE WAS TOWED TO THE DEALER. HOWEVER, THE DEALER ADVISED THAT PARTS WERE NOT AVAILABLE PERFORM NHTSA CAMPAIGN NUMBER: 15V701000 (ENGINE AND ENGINE COOLING). THE CONTACT ALSO STATED THAT THE REPAIR HAD EXCEEDED A REASONABLE TIME. THE FAILURE MILEAGE WAS NOT AVAILABLE.