This custom 4-pin trailer wiring harness is specifically designed for use with General Motors' Cadillac XT5 and XT6 vehicles. It allows for easy and secure connection between the vehicle and the trailer, ensuring reliable and safe towing. Please note that this product may contain chemicals that are known to the State of California to cause cancer and birth defects or other reproductive harm. However, rest assured that the product has been rigorously tested and meets all necessary safety standards. Invest in this high-quality wiring harness to enhance your towing experience.