2009 Gmc sierra 1500 hybrid gas mileage Read Also: 2009 Gmc sierra hybrid gas mileage 2011 Gmc sierra 1500 hybrid gas mileage 2011 Gmc sierra hybrid gas mileage 2009 Gmc sierra 1500 hybrid review 2009 Gmc sierra 1500 hybrid reviews 2009 Gmc sierra 1500 hybrid