The seamless fit of its interior panels and tight exterior gaps give Denali a sleek look inside and out.
Denali's exterior features include:

Provide outstanding traction, balance, and style.

Engineered to handle a variety of roads and road conditions.

The most powerful half-ton V8 engine ever.

With over 400 horsepower on tap, the Sierra Denali 6.2L V8 engine is the most powerful half-ton V8 ever. It offers Flex Fuel capability and Variable Valve Timing, and provides ample power for towing, hauling, passing, and just about anything else you might think of.
Safe towing with advanced equipment.

The Eaton automatic locking rear differential delivers traction to the wheels that need it the most for safe towing and driving.
Available Hydraulic Body Mounts improve and refine the Sierra's overall drive comfort.
Hydraulic Body Mounts utilize fluid passing through internal chambers in the mount to improve vibration damping and soften inputs from the frame into the cab. The result? An already smooth ride made even smoother.

Details give Sierra Denali's instrument panel a rich, high-quality feel and Bose speakers fill the extraordinarily quiet cabin with your own kind of noise.

Sierra Denali's attention to detail will not go unnoticed. Chrome details, wood grain trim, and low-gloss tones give Denali's instrument panel a rich, high-quality look and feel.
An available full touch-screen navigation system* also features a fully integrated AM/FM stereo and CD player, while the Bose premium speaker system features Audio Pilot noise reduction and 9 speakers including subwoofer.
* Map coverage not available in Puerto Rico, the Virgin Islands and portions of Canada.

Second-row passengers enjoy first-class entertainment.
An 8-inch diagonal LCD screen provides a vibrant picture while audio transmits through wireless headphones or the vehicle audio system.

Relax in professional grade comfort.
Standard power-reclining front bucket seats include 12-way adjusters with adjustable lumbar support, 2-position driver-side memory, and available heated and cooled seat cushions.
Experience XM Satellite Radio for three months free, with no obligation.
With a wide variety of programming, XM Radio has something to excite any driver. Whether you want to be entertained or informed, to laugh, think, or sing, XM has the perfect channel for you, coast-to-coast, and in digital-quality sound.* Available XM NavTraffic enhances your vehicle's GPS navigation system by showing real-time traffic data when it's needed most -- while you're driving.**
* XM Radio requires a subscription, sold separately after the first 90 days. Not available in Alaska or Hawaii. For more information, visit gm.xmradio.com.
** XM NavTraffic service is available within 80 metropolitan areas - visit www.xmradio.com/navtraffic for full service coverage information.

Helps you when backing up.

Helps you when backing up. A rear-mounted camera uses Sierra’s available navigation system or the rearview mirror to display a wide view behind the vehicle
Get the confidence that comes with 100,000 miles/5 years of powertrain warranty coverage.††
Now standard on most 2009 GMC models: The 100,000-mile/5-year GMC Powertrain Limited Warranty, plus Roadside Assistance and Courtesy Transportation.††
Because power equals confidence.
More than 400 horsepower provides the confidence needed to tackle almost any situation. Plus, experience the benefits of Flex Fuel capability and Variable Valve Timing.
Second-row passengers can enjoy first-class entertainment.
An 8-inch diagonal LCD screen provides a vibrant picture while audio transmits through wireless headphones or the vehicle audio system.
Available Bluetooth integration equals hands-free calling. Steering-wheel controls let you dial by voice and then listen to calls through Sierra's audio system.§
Learn how to get connectedEnjoy effortless flow-through ventilation.
Available Bluetooth integration equals hands-free calling. Steering-wheel controls let you dial by voice and then listen to calls through Acadia's audio system.§
Get one year of OnStar Safe & Sound Plan.†
Enjoy the world's most comprehensive in-vehicle security, communications, and diagnostics system.†