The 5.3i benefits from GM's Active Fuel Management system, which helps to improve fuel economy by up to five percent by running the engine on half of its cylinders when cruising or coasting.
All three models are equipped with a four-speed automatic transmission and an automatic all-wheel drive system. In Aero models, the system uses a Torsen center differential that directs more torque toward the wheels with the best traction, for improved launch on slippery surfaces.
A trailer hitch receiver is standard on the 9-7X, and it can tow up to 6,600 pounds. The interior is also quite roomy, with seating space for five. The rear seatback is split and folds forward to expand the already-spacious 39.8 cubic feet of cargo space to more than 80 cubic feet.
In addition to the more powerful engine, the Aero includes a sport suspension, heavy-duty rear axle, limited-slip rear differential. The Aero model is also offered in an exclusive color--Carbon Flash Metallic--and includes 20-inch polished aluminum wheels with V-rated high-performance tires. Specially embroidered seats and embossed floor mats are also included.
The StabiliTrak stability control system, which improves safety by helping to avoid the loss of driver control on slippery road surfaces or in evasive maneuvers, is standard across the line, along with a rollover-sensing safety system and head-curtain side air bags.
As the 9-7X is available in a single trim level, all three models come well equipped, with most common luxury-car features included, such as power heated side mirrors, leather upholstery with heated front seats, remote keyless entry, dual-zone automatic climate control, and a premium sound system with six-disc changer. Noteworthy options include a DVD-based touch-screen navigation system, adjustable pedals, and a DVD rear entertainment system.