Grey 2017 GMC Yukon SLT 44720 miles HD TRAILERING PACKAGE includes (GU6) 3.42 Axle Ratio (JL1) Trailer brake controller (Z85) Suspension Package and includes (NQH) transfer case active 2-speed with 4WD models, OPEN ROAD PACKAGE includes additional 9 months of SiriusXM... via CarsDirect