The product is a 2018 Chevy Silverado 1500 Engine Control Module (ECM) with the manufacturer part number 12686383. It features a protection lock, input connection for supply voltage & ground, EEPROM memory, and logic output connection. The ECM is designed for easy installation with a bolt-on mounting style and a 60-day manufacturer warranty. Made with materials such as aluminum, plastic, and steel, this genuine OEM part is a direct replacement for the specified Chevrolet models.