The GM Interface Extension Harness 2019-Up is a specialized cable assembly designed for seamless integration with General Motors vehicles from 2019 and newer models. Manufactured by Axxess Integrate by Metra, this extension harness serves as a critical component for mobile installation projects, allowing installers to extend and connect interface modules with factory vehicle systems. Measuring 15.2 inches in height, 5 inches in width, and 1.8 inches in length, this compact yet functional harness provides the additional reach needed for clean, professional installations in various GM vehicle configurations. Weighing just 0.91 pounds, it's lightweight and easy to work with during installation. The harness is proudly made in the United States and features quality construction designed to maintain signal integrity and reliable connections. Whether you're installing aftermarket audio systems, navigation units, or other electronic accessories in compatible GM vehicles, this extension harness provides the necessary connectivity to bridge your interface module with the vehicle's existing wiring infrastructure, ensuring proper communication between aftermarket components and factory systems.