OER Parts offers a wide selection of Plugs & Wires for your 1976 GMC Truck. OER Parts offers 1976 GMC Truck Accel Shorty Spark Plugs, 1976 GMC Truck E3 Spark Plugs, 1976 GMC Truck MSD Spark Plug Wire Set, 1976 GMC Truck Accel Spark Plug Wire Set, 1976 GMC Truck Taylor Thunder Volt Spark Plug Wire Set, 1976 GMC Truck Pertronix Flame Thrower Plug Wire Set, 1976 GMC Truck Cool-It Plug Wire Sleeve Set, 1976 GMC Truck Spark Plug Wire Puller, and 1976 GMC Truck Spark Plug Wire Tester.