For Reference only! COLORADO 17-19 Towing Control; ESCALADE 15-18 Towing Control; (LH rear frame) ESCALADE ESV 15-18 Towing Control; (LH rear frame) SIERRA 1500 PICKUP 14-18 Towing Control; (LH rear frame) SIERRA 1500 PICKUP 19 Towing Control; classic style (mirrors mount in window corner), (LH rear frame) SIERRA 2500 PICKUP 15-19 Towing Control; (LH rear frame) SIERRA 3500 PICKUP 15-19 Towing Control; (LH rear frame) SIERRA DENALI 1500 14-18 Towing Control; (LH rear frame) SIERRA DENALI 2500 15-18 Towing Control; (LH rear frame) SIERRA DENALI 3500 15-18 Towing Control; (LH rear frame) SILVERADO 1500 PICKUP 14-18 Towing Control; (LH rear frame) SILVERADO 1500 PICKUP 19 Towing Control; classic style (mirrors mount in window corner), (LH rear frame) SILVERADO 2500 PICKUP 15-19 Towing Control; (LH rear frame) SILVERADO 3500 PICKUP 15-19 Towing Control; (LH rear frame) SUBURBAN 1500 15-19 Towing Control; (LH rear frame) SUBURBAN 3500 16-18 Towing Control; (LH rear frame) TAHOE 15-19 Towing Control; (LH rear frame) YUKON 15-19 Towing Control; (LH rear frame) YUKON XL 1500 15-19 Towing Control; (LH rear frame) Please make sure to match the Part Number of the item with the one you have. All Modules have to be reprogrammed/repaired. We do not provide reprogramming/repair service. We are also not responsible for any kind of labor cost or reprogramming cost. In case of a return, Buyer will only be covered for the item price. This ECM is a core, recommended to be repaired/re-manufactured before installation. ECM appears to be in good condition but has not been tested. Please review all photos and the part number as this is the exact unit you will receive. All orders going to Alaska, Guam, Hawaii, Puerto Rico, and other U.S. Territories will be shipped out with USPS Priority Mail. Orders placed within the 48 states will be shipped with UPS Ground. Powered by SixBit's eCommerce Solution