OER Parts offers a wide selection of Fuel Doors & Hardware for your 2013 GMC Truck. OER Parts offers 2013 GMC Truck Fuel Filler Neck Pocket Sleeve, 2013 GMC Truck Fuel Filler Door, 2013 GMC Truck Plastic Fuel Tank Filler Door, 2013 GMC Truck Rear Fuel Door with Spring, 2013 GMC Truck Fuel Filler Door Bumper, 2013 GMC Truck Fuel Door Emblem, 2013 GMC Truck Locking Billet Fuel Door, 2013 GMC Truck Fuel Filler Door Tension Spring and 2013 GMC Truck Fuel Door Lock.