The product is a used OEM HVAC control unit designed specifically for 2003-2006 Cadillac Escalade vehicles. The part numbers associated with this product are 19260762 and 15112018. This product does not require any drilling or modifications for installation, making it a convenient and straightforward upgrade for your vehicle. With the Cadillac brand guaranteeing quality and compatibility, this HVAC control unit is a reliable choice for maintaining your vehicle's air conditioning and heating systems.