GMC Sierra 2007 Automatic Gasoline mileage: 300 KM or more Sierra 2007, mileage 490000 Without 4x4 Airbag light is on. Inspection says airbag sensor. Chassis is sound. Body: right fender and trunk have been modified. Hood is painted, no peeling. Engine and transmission, I don't know anything about them. Airbag light And engine light are on. Also ABS light.