This listing is for a trailer brake control module (TBCM) that is programmed/flashed for your vehicle with the newest updates from GM using your VIN to match your vehicle. After you purchase the TBCM you will need to provide us with your VIN so we can program it before we ship it to you. The following part numbers are compatible 20964299 20850923

SIERRA 2500 PICKUP 13-14 Towing Control; (LH rear frame)
SIERRA 3500 PICKUP 13-14 Towing Control; (LH rear frame)
SIERRA DENALI 2500 13-14 Towing Control; (LH rear frame)
SIERRA DENALI 3500 13-14 Towing Control; (LH rear frame)
SILVERADO 2500 PICKUP 13-14 Towing Control; (LH rear frame)
SILVERADO 3500 PICKUP 13-14 Towing Control; (LH rear frame)
SUBURBAN 2500 13 Towing Control; (LH middle of frame)
YUKON XL 2500 13 Towing Control; (LH middle of frame)