OER Parts offers a wide selection of Cooling System Components for your 1973 GMC C15/C1500 Pickup. OER Parts offers 1973 GMC C15/C1500 Pickup Shroud Hardware, 1973 GMC C15/C1500 Pickup Shroud Mounting Kit, 1973 GMC C15/C1500 Pickup Lower Radiator Fan Shroud Clip, 1973 GMC C15/C1500 Pickup Upper Fan Shroud Bracket, 1973 GMC C15/C1500 Pickup Lower Fan Shroud Bracket, and 1973 GMC C15/C1500 Pickup Fan Shroud Flange Nuts.