Locate GMC Oil Drain Plug Gasket & GMC Sealing Washers In Canada. Replace GMC Drain Plug Gaskets. Shop GMC Oil Pan Gasket Replacement Cost. To ensure the longevity of your GMC's engine, regular maintenance of the Drain Plug Gaskets is crucial. These gaskets serve as a seal to prevent oil leaks and should be inspected each time you change the oil. Signs of wear or oil residue around the drain plug are clear indicators that a replacement is necessary. To extend their lifespan, always tighten to the manufacturer's recommended torque and opt for high-quality materials like copper or aluminum. When selecting a new gasket, consider the unique features of rubber versus metal options; rubber gaskets offer superior flexibility, while metal gaskets are prized for their durability. Proper installation is key – clean the plug and pan thoroughly before fitting the new gasket to ensure a perfect seal. With these tips, you'll keep your GMC in top condition, driving customer satisfaction and repeat business to your online auto parts store.