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2014 GMC Sierra Comparison

June 20th, 2013 in News

2014 GMC Sierra Towing

When it comes to trailering, it’s pretty clear who’s in front. In the full-size pickup department, that would be the 2014 GMC Sierra. The honor belongs to the 6.2L V-8 Sierra Denali, boasting a massive 12,000-pound towing capacity, 420 horsepower, and 450 pound-feet of torque.

2014 GMC Sierra Towing

Even without stepping up to the 6.2L engine, the smaller 5.3L V-8 engine still outclasses the competition. The Sierra 5.3L EcoTec V-8 has a max trailering rating of 11,500 pounds, with an SAE certified 355 horsepower and 383 lb-ft of torque. That’s more than all of the competitors’ most powerful trucks, while using less fuel in the process. Ford’s largest truck, the 6.2L V-8, is rated at 11,300 pounds, The Ram 5.7L Hemi V8 at 10,450 pounds, and the Toyota Tundra 5.7L V-8 comes in at 10,400. But let’s compare apples to apples—Ford’s 5.0L V-8 is rated at 10,000 pounds, and the Ram 4.7L V-8 only 7,700 pounds. The GMC Sierra is professional grade, a step above the competition.

2014 GMC Sierra Towing

Our engineers worked hard to increase stability to give you the confidence you need for high level trailering. Hook up an empty trailer or boat, and you’ll barely notice it’s there. New wheels and higher specification tires with stiffer sidewalls reduce wobble under load, and a bevy of assistive technologies that aid everything from acceleration, safety, and braking. Hill Start Assist automatically engages the Sierra’s brakes for 1.5 seconds or until the gas pedal is pressed. By simply pressing a button on the shift lever, the driver can active Tow/Haul Mode, which modifies the standard six-speed transmission. In this mode, shift points are higher under acceleration for additional power, while engine braking is engaged earlier during downshifts. Trailer Grade Braking efficiently slows the vehicle by downshifting the engine automatically when the brakes are applied lightly. As a result, disc brake rotor temperatures are reduced by as much as 100 degrees Celsius during a braking event. Advanced drivers who want full control during trailering can utilize TapShift (which deactivates Trailer Grade Braking).

Boats, horses, Airstreams, get ready. Just remember the 55 mph speed limit for trailering vehicles.

2014 GMC Sierra Towing

The Strongest Truck on the Block also Takes the Least Fuel.

April 9th, 2013 in News

2014 GMC Sierra

The 2014 GMC Sierra 1500 not only provides best-in-class durability and capability, it’s also the clear leader in fuel economy. The EcoTec engine has experience gained from millions of trucks and billions of real-world customer miles. In the GMC Sierra 1500, the 5.3L EcoTec3 V-8 engine (preferred by 3 out of 4 GMC owners) achieves 16 mpg in the city and 23 mpg on the highway. That’s 2 mpg higher than a 2013 Ford V8, 3 mpg higher than a Ram V8, and even bests the Ford F-150 EcoBoost V-6.

Direct injection (as opposed to port injection) sprays fuel directly into the combustion chamber, allowing for a higher compression ratio and improving power, efficiency, and reducing emissions all at once. Continuously variable valve timing and cylinder deactivation control how and how many cylinders are used, depending on the load. These fuel saving technologies are seamlessly integrated with the capable powerhouse in the engine bay. With 355 hp and 383 lb-ft of torque at 4100 rpm, the 5.3L V-8 offers class-leading towing capacity of 11,500 pounds, even besting Ford’s biggest 6.2L. That’s like towing a trailer with a pair of rhinos, just because you can. Also available are a 4.3L V-6 and 6.2L V-8 for those seeking a more efficiency or power, respectively.

2014 GMC Sierra Fuel Economy

Other improvements from the 2013 edition include DuraLife brake rotors, unique for its Ferritic Nitro-carburizing technology, which significantly reduces rust build up. This technology has been used on GM motors for years, and it’s finally made its way to safe external application. Brakes rotors stay shiny and new, even through their extended lifespan without corrosion. A CornerStep rear bumper allows easy truck bed access, and a 4.2 inch radio display displays artist names and song titles and audio settings. MSRP for the standard GMC Sierra 1500 4.3L model starts at $25,085, with the 5.3L V-8 as an option for $895. Each includes Pro Grade Protection, five-year/100,000 mile powertrain warranty and three-year/36,000 mile bumper to bumper warranty. Oh, and the first two years (or 24,000 miles) of scheduled maintenance is on us. GMC is confident in its craftsmanship—you simply won’t find this kind of coverage in the competition.

2014 GMC Sierra Fuel Economy
On paper, the 2014 GMC Sierra 1500 can’t be beat. Come see for yourself what it takes to be called professional grade.

EPA fuel economy estimates, light-duty pickups with V-8 and turbocharged V-6 engines.

2014 GMC Sierra Fuel Economy

Maximum available towing ratings, light-duty pickups with V-8 and turbocharged V-6 engines

2014 GMC Sierra Fuel Economy

Take a Look Inside the 2014 GMC Sierra

March 12th, 2013 in News

2014 GMC Sierra Interior

2014 GMC Sierra InteriorTake a look inside a GMC Sierra to see the heart and soul of a professional-grade performance truck. Everything has a place and purpose, and the driver-oriented instrumentation gives a confident sense of control.

Having a double duty glove box means more than having extra space. It’s a reflection on versatility, a small reminder than every detail is carefully crafted and placed with the driver in mind. The buttons are big enough to be used with work gloves, yet seamlessly arranged in the center stack. Choose from a well-equipped standard set of features, or customize your own truck by adding premium features like dual zone climate control, rear vision camera built in to the rearview mirror, or steering wheel mounted controls. Available options let you build the truck you want, without having to pay for anything you don’t need.

2014 GMC Sierra InteriorThe Denali trim package adds the ultimate in luxury and comfort to the powerfully equipped Sierra, with perforated leather seats, soft touch materials throughout the cabin, brushed metal and wood grain accents, and a heated, leather wrapped steering wheel. A premium sound package provided by Bose features SurroundStage signal processing and AudioPilot noise compensation, which makes everything sound crystal clear when the engine is working hard. And a dynamic 7” color touch navigation display can guide you home, should you ever need it.

Step inside a GMC Sierra, and see the professional-grade soul of a GMC truck.

GMC Pro Grade Protection - The Industry’s Best Pickup Coverage

February 3rd, 2013 in News

GMC Pro Grade CoverageGMC Pro Grade ProtectionOn the fence about purchasing a 2013 GMC Sierra 1500? There has never been a better time to make the leap. Introducing GMC Pro Grade Protection, the industry’s best pickup coverage on 2013 Sierra 1500s.

2 Years/24,000 Miles of Scheduled Maintenance that includes

•Oil & Filter Service

•Tire Rotation

•Multipoint Inspection

3-Year/36,000-Mile Bumper-To-Bumper Warranty

•GMC backs your new vehicle with its no-deductible, Bumper-to-Bumper Limited Warranty

5-Year/100,000-Mile Powertrain Warranty

•All GMC light-duty vehicles come with a fully transferable, no-deductible 5-year/100,000 mile Powertrain Limited Warranty. See dealer for details.

Come in today and check out our selection of 2013 GMC Sierra 1500s. With such great offers, your only worry will be deciding on a color.

The 2014 GMC Sierra. A leather-wrapped fist in the wind.

January 13th, 2013 in News

2014 GMC Sierra

2014 GMC SierraStrong. Refined. When it comes to balancing power with sophistication, no truck does it better than the Sierra. That’s because GMC owners know that if something is worth doing, it’s worth doing right. When we designed the 2014 GMC Sierra, we kept the needs of our fellow drivers in the forefront, creating innovative solutions for the daily needs of truck owners while including the performance and polish the GMC line is known for. As a result, the 2014 Sierra not only offers more power and efficiency than ever before—it also offers the longest list of standard features ever for a full-size GMC pickup. We’re ready for you.

The interior features are bigger, bolder, and smarter. Control panels and buttons are large enough to be operated with work gloves on, the instrument panel is tall and easy visible, and premium materials integrate the cabin into a cohesive and expertly crafted interior. A standard center 2014 GMC Sierrainstrument cluster displays vehicle status, a trip computer, radio, and navigation, and an available IntelliLink system takes the control panel to the next level with a larger screen, Bluetooth, Pandora, and map displays. The system can be operated via voice command, letting you keep your hands on the wheel and eyes on the road. There are also discreet compartments large enough for laptops, with connectivity options, and an available 110-volt outlet, five USB ports, four 12-volt outlets, and an SD card slot. A suite of Driver Alert Technology is available for the Sierra, including Forward Collision Alert, Lane Departure Warning, and the first-ever Driver Alert Seat. Potential dangers, like a driver approaching too quickly, trigger vibrations on the side of the driver’s seat that the danger is approaching from. We’ve combined comfort, safety, space, and technology into an unprecedented standard for truck interiors in the light duty class.

Also new to the 2014 Sierra are front-hinged doors on extended cab 2014 GMC Sierramodels, eliminating the need for the front door to be open when passengers are entering or exiting the rear. In addition, crew cab models now have two available bed sizes, the current 5’8” and the larger 6’6” size. Corner steps on the rear bumpers allow easy access whether the tailgate is up or down, and movable tie downs can be placed in nine different locations and bear a 500-lb load. Simply put, you’ll find innovative form and function in every inch of this truck.

Underneath the hood, the 2014 Sierra comes in a new line of engines, boasting increased power, torque, and fuel efficiency all at once. The EcoTec3 engine family combines direct injection, continuously variable valve timing, and active fuel management, which allows the engine to seamlessly switch to four cylinder operation during light loads to save on fuel. Three available configurations ensure your Sierra is perfectly tailored to your needs. The 4.3L V6 offers improved torque and fuel efficiency, the 5.3L 2014 GMC SierraV8 offers balance and flexibility, and the 6.2L V8 offers unprecedented capability while still retaining the seamless fuel saving technology.

Truck owners around the world turn to GMC owners for advice for a reason. The 2014 GMC Sierra offers the next generation of expertise in the industry.

2013 GMC Sierra 2500HD Bi-Fuel

December 3rd, 2012 in News

2013 GMC Sierra 2500HD Bi-Fuel

2013 GMC Sierra 2500HD Bi-Fuel

GMC and Chevrolet are both gearing up their bi-fuel pickup trucks for 2013, in the form of the GMC Sierra 2500 HD and Chevrolet Silverado HD.

These are two trucks tough enough for any job, but innovative enough to reduce fuel costs and carbon footprint. We’re talking about a Vortec 6.0L V8 that screams efficiency. The CNG (compressed natural gas) capable engine switches seamlessly between CNG and gas fuel and has a range of 650 miles. This kind of versatility, combined with the reliability that comes with every GM truck, makes the bi-fuel pickup trucks an attractive option to savvy businesses and consumers alike.

The Type-3 single-tank CNG system was designed to allow the maximum bed space of any bi-fuel truck from an Original Equipment Manufacturer, in both standard or long-box, and in two or four-wheel drive. Truck-reliant businesses feeling the sting of rising gas prices can find respite in the Sierra 2500 HD and Silverado HD.

The bi-fuel option is available for an additional $11,000 above the suggested price of the base vehicle, and current CNG costs the equivalent to $1.89 per gallon of gasoline. Depending on driving habits, the extra startup cost can pay for itself in just a few years. As GM trucks, each vehicle is strictly tested for quality, durability, and safety so that each meets the high standards GM vehicles are known for. Each truck is covered by GM’s three-year, 36,000 mile new vehicle limited warranty and five-year, 100,000 mile limited powertrain warranty and vehicle emissions warranty.

As more CNG stations are installed in the U.S., the transition to cost effective bi-fuel trucks marks a shift in a consumption-conscious world without sacrificing the strength needed to perform America’s toughest jobs.

GMC Pickups 101: What’s in a Name?

August 17th, 2012 in News

GMC Pickup Names

When three truck builders – Randolph, Reliance and Rapid – merged to become GMC in 1912, the brand’s range of gasoline- and electric-powered trucks used model numbers between 1 and 12, each denoting payload in thousands of pounds, or how much weight could be loaded on the rear.

Today, the labels “½-ton”, “¾-ton” and “1-ton” are still used industry wide for fullsize pickup truck classes despite their having little connection to the trucks’ capabilities. For 2013, a GMC Sierra 1500 “½-ton” has a payload capacity that ranges from 1,550-1,940 pounds – considerably more than the 1,000 pounds once implied.  A “1-ton” Sierra 3500HD can haul up to 7,215 pounds; almost four times the 2,000 pounds its moniker suggests.

GMC Pickup Names

“The payload-based naming convention for pickups existed right from the beginning,” said General Motors Heritage Center Manager Greg Wallace. “The ½-ton, ¾-ton, and 1-ton models became most popular with retail customers over a few decades, not just for GMC but all manufacturers. While payload capacities have grown since, those three names stuck.”

As with payload classifications, GMC helped pioneer other naming conventions for pickups. In 1967, GMC was the first company to use 1500, 2500 and 3500 to designate its three truck models, numbers that were based off the first segment of vehicle identification numbers, or VINs, and denoted hauling capability. Those numbers remain an integral part of the GMC naming strategy and every current fullsize truck sold by an American automaker uses numbers starting with 15, 25 and 35 to denote the three classifications.

The Sierra name became standard for all GMC fullsize pickups in 1989 after being used for various upscale trim packages through the ‘70s and ‘80s. The 2013 Sierra 1500 represents the core of GMC’s truck business, while the purpose-built Sierra 2500HD and 3500HD models are some of the most-capable pickups ever produced, with class-leading maximum payload.

Sierra 1500 Ranks Highest in Segment in Initial Quality

August 17th, 2012 in News

The GMC Sierra 1500 ranks highest in the large pickup segment of the 2012 J.D. Power and Associates Initial Quality StudySM, based on results announced today.

2012 GMC Sierra

“GMC Sierra customers demand not only exceptional capability and performance, but also top quality,” said Tony DiSalle, vice president of GMC Marketing. “The fact that Sierra ranked highest in the large pickup segment in this study demonstrates that the brand is following through on its commitment to customer satisfaction.”

In May 2012, total Sierra fullsize pickup sales, including 1500 as well as ¾-ton, and 1-ton HD models, were up 23 percent year over year.

GMC Yukon was also among the leaders in the large crossovers/SUV segment. All GMC models eligible for the study improved their scores and, for the second year in a row, GMC scored above the industry average.

The 2012 IQS is based on responses from more than 74,000 purchasers and lessees of new 2012 model year vehicles surveyed at 90 days of ownership. The study includes a 228-question survey designed to provide manufacturers with information they can use to quickly identify problems and drive improvement.

2011 GMC Sierra Denali HD

March 25th, 2011 in News

2011 Sierra Denali HD

GMC Sierra Denali 2500HD and 3500HD – the first offerings of the exclusive Denali line on a heavy-duty GMC pickup – lead a new Sierra heavy-duty truck lineup for 2011. The comprehensively redesigned roster of 2011 Sierra 2500HD and 3500HD trucks includes a new, more powerful 6.6L Duramax turbo diesel that delivers 397 horsepower (296 kW) at 3,000 rpm and 765 lb.-ft. of torque (1,037 Nm) at 1,600 rpm.

The new Sierra Denali HD is the latest expression of GMC’s Denali philosophy of blending capability with premium features and styling,” said Lisa Hutchinson, GMC product marketing director. “It is a premium tool that offers many comfort and infotainment features, along with a maximum towing capacity of 21,700 pounds with the more powerful Duramax diesel.”

2011 Sierra Denali HD

The new Denali HDs are crew cabs available only in the 2500 series (3/4-ton), 2WD and 4WD configurations, as well as the 3500 Series (1-ton) 2WD and 4WD in both single-rear-wheel and dually versions. The 3500 series is also available in standard (6-foot 6-inches) and dually long box (8-foot) versions. A Vortec 6.0L gas V-8/six-speed automatic powertrain is standard and the new Duramax 6.6L turbo diesel/Allison 1000 six-speed transmission powertrain is available on all Denali HDs.

The iconic Denali four-bar, chrome grille with round air inlets distinguishes the Sierra Denali HDs on the outside, along with body-color bumpers, chrome door handles, chrome accents and 17- (Dually), 18- and 20-inch polished forged aluminum wheels. On the inside they include Denali-specific brushed aluminum trim, power-adjustable pedals, a Bose premium surround audio system and 12-way power seats. Along with an optional heated steering wheel, heated and cooled leather-appointed seating is available. The exterior is offered in three colors: Black, Stealth Gray and White.

2011 Sierra Denali HD

The balance of the new 2011 Sierra HD lineup is identified on the outside by new, three-bar grilles and powertrain-badged louvered hoods, along with a revised, full-width chrome steel front bumper and a new family of 17-, 18- and 20-inch wheels. It’s beneath the skin, however, where they are truly separated from their predecessors – and the competition.

“GMC has been one of the industry’s strongest truck brands for more than 100 years, and we back the 2011 Sierra HDs with a comprehensive five-year/100,000-mile powertrain warranty that provides the best coverage in America,” said Hutchinson. “From greater diesel power to the segment-best warranty, these trucks deliver strength and peace of mind on all fronts.”

Greater Capability

“You can see by the ratings numbers that the Sierra HD lineup is more capable, but the trucks are also better performers in the intangible qualities that bond owners with their trucks,” said Rick Spina, vehicle line executive. “They accelerate quicker – especially when fully loaded – stop more confidently and deliver a smooth, quiet driving experience that you have to experience to fully appreciate.”

Eleven all-new, fully boxed frame assemblies improve durability and ride characteristics; and support increased capabilities.

The frames have increased cross sections and use more high-strength steel for greater durability, higher towing capacity and improved ride and handling; the front sections are hydroformed. The bending and beaming stiffness of the frames is increased 92 percent and 20 percent, respectively, with the fully boxed sections enhancing torsional stiffness by a factor of five. Also, larger engine and transmission mounts, coupled with a 125-percent-stiffer front frame structure, provide greater vibration control, while hydraulic body mounts are incorporated under the cab section on extended and crew cab models for a more isolated feel inside.

Engineers addressed common customer and aftermarket uses when designing the new frames, including adding access holes to the rear frame section to enable easier installation of fifth-wheel/gooseneck-style hitches. Also, the frame-mounted hitch for conventional trailering is stronger, with a box-tube design. It supports up to 17,000 pounds (7,711 kg).

New, stronger front suspension enables snow plow installation on all 4WD models.

A completely redesigned independent front suspension system offers up to a 25-percent greater front axle weight rating – up to 6,000 pounds (2,721 kg) front gross axle weight rating (FGAWR) – so a snow plow can be used on all 4WD cab configurations with the available snow plow prep package. Sierra’s signature short-long arm/torsion bar front suspension design is retained, but now features new, forged steel upper control arms that are stronger and lighter than their predecessors.

2011 Sierra Denali HD

The new lower control arms are made of precision-machined cast iron to handle the greater loads. Five different torsion bar rates support five different front gross axle weight ratings (a single torsion bar was previously used for all models). This helps stabilize the range of trim heights of various models under load, while enhancing appearance, handling, durability, tire wear and alignment. The trim height is adjusted on each bar via a single bolt, easily allowing the height to be changed to account for the weight of a snow plow or other accessories.

The Sierra HD front suspension now uses a pair of urethane jounce bumpers on each side, instead of one, for improved load management; and there’s a new upper shock mount attachment design that’s positively connected to the frame with two fasteners. This design eliminates squeaks and clunks, while supporting higher load capability and increased durability.

Compared to competitors’ beam-axle front suspensions, the Sierra’s independent front suspension provides a better ride, more accurate trim height control (with fewer parts) and greater flexibility to adjust the alignment for weight and tire sensitivity.

New, asymmetrical leaf-spring rear suspension supports greater loads.

Matching the Sierra HD’s greater strength and capability is a rear suspension designed to support greater loads. It features a new, larger asymmetrical leaf-spring design that also contributes to improved ride and handling characteristics. The asymmetrical design is derived from unequal front and rear spring half lengths, which minimize axle hop and enhance traction control efficiency.

2011 Sierra Denali HD

The 2500HD models feature a two-stage leaf-spring design, while 3500HD models have a three-stage design. All models feature 3-inch-wide (76 mm) leaf springs that are 20-percent wider than previous models. The larger leaf-spring design supports increased rear gross axle weight ratings across the board. On the 2500HD models, the rating is 6,200 pounds (2,818 kg) – up from 6,084 (2,765). On 3500HD models, the rating increases to 7,050 pounds (3,204 kg) on single-rear-wheel models and 9,375 pounds (4,261 kg) on dual-rear-wheel models – the latter representing a nearly 14-percent increase over the previous 8,200-pound (3,727 kg) rating.

Sierra HDs deliver a more refined driving experience.

Longer wheelbases – ranging from 133.6 inches (3,395 mm) to 167.7 inches (4,259 mm) – and wider front/rear tracks enhance the ride and handling characteristics of the Sierra 2500HD and 3500HD, giving them a greater feeling of smoothness and control. The longer wheelbases and wider tracks are complemented by the new, stiffer frames, new jounce bumpers, shock mounts and hydraulic body mounts to provide a solid, smooth and isolated driving experience. New shocks were specially valved to support the new trucks’ weight ratings, while balancing excellent ride characteristics.

A revised steering system designed to support the trucks’ greater front gross axle weight rating also enhances the driving experience. It includes a new, larger steering gear, power steering pumps and linkages. The pumps (different parts for gas and diesel models) deliver greater pressure for reduced steering effort in low-speed and parking maneuvers; they are also quieter. On some models, the new linkages feature a compliant joint added at the pitman attachment to enhance handling.

New 6.6L Duramax turbo diesel

The workhorse Duramax 6.6L turbo diesel V-8 is more powerful and durable for 2011, delivering 397 horsepower (296 kW) at 3,000 rpm and 765 lb.-ft. of torque (1,037 Nm) at 1,600 rpm. It also produces lower emissions and offers B20 biodiesel capability that promotes a domestically produced renewable fuel.

2011 Sierra Denali HD

Sierra HD’s selective catalytic reduction after-treatment system delivers better overall diesel performance, with a range of about 5,000 miles (8,000 km) between DEF refills. Its optimized combustion and after-treatment process provides about 700 miles (1,125 km) between diesel particulate filter regenerations.

New Allison 1000 six-speed automatic transmission

The enhanced Allison 1000 is strengthened to handle the higher torque capability of the new 6.6L Duramax engine, while also helping to improve fuel economy and provide seamless assistance with a new exhaust brake system. Greater efficiency is delivered through reduced “spin loss” – meaning, the transmission channels more of the engine’s power to the axles, allowing it to do more with less fuel.

The Allison 1000 also features driver shift control with tap up/tap down shifting and a patented elevated idle mode cab warm-up feature. Also, the tow/haul mode reduces shift cycling for better control and improved cooling when towing or hauling heavy loads. The six-speed configuration retains its two overdrive gears for optimal efficiency.

Performance with the Duramax/Allison combination is also improved over previous models, with preliminary testing showing 0-60 mph times of less than 9 seconds and quarter-mile times of less than 16 seconds in 2500HD models. That’s about 0.3-second and 0.5-second quicker, respectively, than previous models.

Vortec 6.0L/Hydra-Matic 6L90 six-speed powertrain is standard on all models.

The Vortec 6.0L gas V-8 with variable valve timing returns to the new Sierra HDs, along with a strengthened version of the Hydra-Matic 6L90 six-speed automatic transmission. This combination delivers excellent performance and efficiency, with a greater emphasis on low-rpm power. It is enhanced for 2011 with greater idle refinement.

The engine is rated at 360 horsepower (268 kW) at 5,400 rpm and 380 lb.-ft. (515 Nm) at 4,200 rpm in trucks with GVWRs up to 10,000 pounds. It is rated at an estimated 322 horsepower (240 kW) at 4,400 rpm and 380 lb.-ft. of torque (515 Nm) at 4,200 rpm in trucks with GVWRs greater than 10,000 pounds.

Brake feel and performance is greatly improved.

The standard four-wheel disc system is completely revamped to deliver smoother, more immediate and confident-feeling performance. Four-wheel, four-channel ABS is standard on all single-rear-wheel models and a three-channel system is standard on dual-rear-wheel models. The front and rear rotors are larger in diameter – 14 inches (355 mm) – and width on all models to support their increased capacity, weight ratings and trailering ratings, while the calipers are stiffer and stronger.

The revised hydroboost brake booster calibration reduces pedal effort, and the revised travel of the pedal provides a more comfortable, confident feel. Larger wheel hub and bearing assemblies complement the new brake system, and the rear rotors attach to the wheel hubs for easier servicing.

‘Smart’ exhaust brake provides greater control and reduces brake pad wear.

A new standard feature on Duramax-equipped models is the “smart” exhaust brake. This driver-selectable feature uses the turbine control of the variable geometry turbocharger and the compression of the engine to generate backpressure, slowing the vehicle without applying the brakes. It is integrated with the cruise control feature, and varies the braking to account for the grade and vehicle load. The exhaust brake allows for virtually effortless driving and towing, with seamless and quiet operation. It also helps prolong brake life and prevents overheating the brakes on long, downhill grades.

Safety features include trailer sway control system and hill start assist.

The trailer sway control system provides an added measure of confidence when towing a trailer. The system senses conditions of trailer sway and intervenes with braking and/or reduced engine power to bring the trailer under control and keep it on its intended path. The system uses electric trailer brakes when a trailer is plugged into the standard wiring harness of the truck, and its performance requires no input from the driver.

2011 Sierra Denali HD

The hill start assist system is automatically engaged when sensors detect the vehicle is on a grade of about 5 percent or greater. It holds the brakes for about 1.5 seconds or until the gas pedal is pressed, preventing rollback. It is particularly effective when towing, giving the driver time to switch from the brake pedal to the gas pedal without rolling.

Broad lineup – inside and out.

For 2011, the Sierra heavy-duty lineup expands to include 12 2500HD models and nine single- and dual-rear-wheel 3500HD models – including a new 3500HD Crew Cab with a 6.5-foot cargo box. Other models are offered in WT, SLE and SLT trim levels, while popular features such as the EZ Lift tailgate and rearview camera system are retained.

The interiors have excellent attention to detail and are quieter – thanks to the range of the truck’s enhancements. The stronger chassis, quieter Duramax engine and even details like a quieter power steering pump contribute to the Sierra HD delivering exceptional quietness.

2011 Sierra Denali HD

Along with quietness, Sierra HD models are designed for work. The interiors feature numerous storage compartments, providing covered access for everything from work gloves to laptops. For those who use their truck as a mobile office, Sierra HDs deliver with available mobile WiFi, USB connectivity, Bluetooth connectivity, XM Satellite Radio and a navigation system. Multiple charge points enable multiple electronic devices to operate simultaneously; and when equipped with the available navigation system, XM NavTraffic offers real-time updates of traffic conditions (in selected areas) that can help plan the most effective route to the job site.

Ready for the long haul – and the cold.

The 2011 Sierra HDs drive farther without stopping to refuel. A new, 36-gallon (136 L) fuel tank is standard on all models and, with the improved fuel efficiency of the powertrains, enables a cruising range of about 680 miles (1,090 km) with the Duramax 6.6L. Cold-weather customers will appreciate the Duramax 6.6L’s quick, reliable start-up, with a starting time on par with gas engines. Its glow plug cycle time is the segment’s best in all temperatures, taking no more than 3 seconds in temperatures as low as -20 F (-29 C). There’s also a cab heat-up feature that allows the engine to idle faster in low temperatures to warm the interior more quickly.

The best warranty coverage in America.

All 2011 Sierra 2500HD and 3500HD trucks work under the best warranty coverage in America: a five-year/100,000-mile limited powertrain warranty, plus roadside assistance, courtesy transportation and other features that provide assurance that GMC backs its trucks for everything the road offers.

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