Shop GMC Brake Drum Price. Purchase GMC Drum Brake Parts. Get GMC Brake Drums & GMC Drum Brakes Replacement. Maintaining the brake drums of your GMC vehicle is pivotal for safety and performance. Regularly inspect for wear patterns and listen for any scraping sounds that signal a need for replacement. To extend the lifespan, ensure your brake shoes are properly adjusted and avoid aggressive braking habits. When choosing new brake drums, consider the cast iron or composite options, each providing durability and heat dissipation qualities essential for effective braking. High-quality materials are a must for longevity, and opting for a drum with a machined finish can promote smoother brake operation. For the DIY enthusiast, remember that a clean installation environment and the use of proper tools are key to successful brake drum installation, enhancing your GMC's stopping power and ensuring reliability.