OER Parts offers a wide selection of Body Components for your 1981 GMC All Models. OER Parts offers 1981 GMC All Models Wiper Motors, 1981 GMC All Models Wiper Motor Grommet, 1981 GMC All Models Wiper Motor To Firewall Seal, 1981 GMC All Models Wiper Motor Harness, 1981 GMC All Models Wiper Motor Shroud Gasket, 1981 GMC All Models Wiper Motor Cover, and 1981 GMC All Models Wiper Motor Mounting Hardware.