Engine: 5.3-liter 16-valve V8

Engine Options: 310-hp 5.3-liter V8; 320-hp 5.3-liter V8; 352-hp 6.0-liter V8 (2500); 366-hp 6.0-liter V8; 380-hp 6.2-liter V8 (Denali)

Transmission: 4-speed automatic

Transmission Options: 4-speed automatic; 6-speed automatic (2500, Denali)

Standard Safety Equipment: dual frontal airbags, three-row head-protecting curtain side airbags with rollover sensors; LATCH child safety seat anchors, tire pressure monitor, ABS with electronic proportioning, electronic stability program with anti-rollover mitigation and traction control (StabiliTrak)

Optional Safety Equipment: rear park assist, rearview camera

Basic Warranty: 3 years/36,000 miles

Assembled In: Janesville, Wisconsin; Silao, Mexico

Model Tested: GMC Yukon XL SLT 1500 2WD ($39,020)

Standard Equipment: cruise control; dual-zone automatic climate control with rear controls; front tow hooks; leather upholstery, front bucket seats; front center console; AM/FM stereo with XM satellite radio; rear seat audio controls and outputs; universal garage door opener; fog lights; remote engine starting; power adjustable pedals; rear park assist; OnStar assistance with one year subscription; driver information center; power windows, locks and mirrors; heated exterior mirrors; leather-wrapped, tilt steering wheel with audio controls; auto-dimming rearview mirror; 60/40 split folding second-row bench seat; two-passenger third-row split folding seat; automatic headlights; roof rails; side steps; locking rear differential; three power outlets; tow package with hitch, seven-pin wiring harness, two-inch receiver and electric brake control harness

Options as Tested: 4SB package ($3,705) with heated 12-way adjustable front seats with lumbar adjustment; memory for the driver's seat and mirrors; Bose nine-speaker audio system with subwoofer; roof rack; and power-folding exterior mirrors with integrated turn signals, driver's side auto-dimming, and reverse tilting; navigation system ($2,250); P275/55R20 tires on polished aluminum wheels ($1,795); rear DVD entertainment system ($1,295); power sunroof ($995); second-row bucket seats ($490); power control to fold second-row seats ($425); power liftgate with lift glass ($400); rearview camera system ($250); three-passenger third-row seat ($100); heated washer fluid ($85)

Destination Charge: 900

Gas Guzzler Tax:

Layout: rear-wheel drive

Horsepower: 320 @ 5200

Torque: 340 @ 4200

Miles Per Gallon in the City/Highway: 14/20

Wheelbase: 130.0 inches

Length/Width/Height in Inches: 222.4/79.1/77.2 inches

Track Front/Rear: 68.2/67.0 inches

Turning Cycle: 43.0 feet

Seating Capacity: 7 people

Head/Hip/Leg Room, f: 41.1/64.4/41.3 inches

Head/Hip/Leg Room, m: 38.5/61.8/39.5 inches

Head/Hip/Leg Room, r: 38.1/49.4/34.9 inches

Trunk Volume: 137.4 cubic feet

Payload:

Suspension, f: independent, coil-over shock

Ground Clearance: 8.9 inches

Curb Weight: 5758 pounds

Towing Capacity: 8100 pounds

Tires: P275/55R20

Brakes: vented disc/disc with ABS and electronic brake proportioning

Fuel Capacity: 31.5 Gallons