OER Parts offers a wide selection of Plugs & Wires for your 1976 GMC C15 Suburban. OER Parts offers 1976 GMC C15 Suburban Accel Shorty Spark Plugs, 1976 GMC C15 Suburban E3 Spark Plugs, 1976 GMC C15 Suburban MSD Spark Plug Wire Set, 1976 GMC C15 Suburban Accel Spark Plug Wire Set, 1976 GMC C15 Suburban Taylor Thunder Volt Spark Plug Wire Set, 1976 GMC C15 Suburban Pertronix Flame Thrower Plug Wire Set, 1976 GMC C15 Suburban Cool-It Plug Wire Sleeve Set, 1976 GMC C15 Suburban Spark Plug Wire Puller, and 1976 GMC C15 Suburban Spark Plug Wire Tester.