OER Parts offers a wide selection of Car Care Products for your 1981 GMC C1500 Suburban. OER Parts offers 1981 GMC C1500 Suburban Cleaning Supplies, 1981 GMC C1500 Suburban Buckets, 1981 GMC C1500 Suburban Grit Guard Basic Wash System 3.5 Gallon Black Pail With Yellow Lid, 1981 GMC C1500 Suburban Grit Guard Basic Wash System 5 Gallon Yellow Pail With Black Lid, 1981 GMC C1500 Suburban Universal Pad Cleaner, and 1981 GMC C1500 Suburban Grit Guard Dual Bucket Washing System.