The GM Silverado Sierra Duramax Diesel Glow Plug Controller Module 12652111 is a genuine OEM part manufactured by GM. It is a direct replacement for the glow plug controller in diesel vehicles, ensuring proper fitment and functionality. With a warranty of "Other" and a quantity of 1, this module is designed to be a reliable and high-quality component for your vehicle's ignition system. This product is ideal for those looking to replace a faulty or damaged glow plug controller in their diesel truck.