OER Parts offers a wide selection of Fuel Doors & Hardware for your 1971 GMC All Models. OER Parts offers 1971 GMC All Models Fuel Filler Neck Pocket Sleeve, 1971 GMC All Models Fuel Filler Door, 1971 GMC All Models Plastic Fuel Tank Filler Door, 1971 GMC All Models Rear Fuel Door with Spring, 1971 GMC All Models Fuel Filler Door Bumper, 1971 GMC All Models Fuel Door Emblem, 1971 GMC All Models Locking Billet Fuel Door, 1971 GMC All Models Fuel Filler Door Tension Spring and 1971 GMC All Models Fuel Door Lock.