True capability. Comes with a standard Vortec™ 6.0L V8 engine with Variable Valve Timing. Advanced technology provides StabiliTrak® Electronic Stability Control System with Traction Control. Integrated trailer brake control helps keep heavy loads stable and adds up to 9,600 lbs. of towing capability.2 Offers available seating for up to eight or 137.4 cubic feet3 of maximum cargo space. SiriusXM Satellite Radio4 with three trial months lets you travel high-tech, along with Bluetooth® wireless technology5 for select phones, and OnStar®6 Directions & Connections® standard for the first six months.