Sierra Denali HD Leads New 2011 Sierra Heavy-Duty <\/strong><\/p>\nST. LOUIS, Mo. \u2013 GMC today announces the new 2011 Sierra Denali HD, the first offering of the exclusive Denali line on a heavy-duty GMC pickup. The Sierra Denali HD leads a comprehensively redesigned lineup of 2011 Sierra 2500HD and 3500HD trucks that go on sale in early summer \u2013 including the most powerful diesel engine in the segment.<\/p>\n
Sierra HD\u2019s new 6.6L Duramax turbo diesel delivers 397 horsepower (296 kW) at 3,000 rpm and 765 lb.-ft. of torque (1,037 Nm) at 1,600 rpm.<\/p>\n
\u201cThe new Sierra Denali HD is the latest expression of GMC\u2019s Denali philosophy of blending capability with premium features and styling,\u201d said Lisa Hutchinson, GMC product marketing director. \u201cIt is a premium tool that offers many comfort and infotainment features, along with a maximum towing capacity of 15,600 pounds with the segment\u2019s most powerful diesel \u2013 that\u2019s enough to tow a 34-foot-long, three-axle travel trailer.\u201d<\/p>\n
The Sierra Denali HD comes exclusively on the 2500HD chassis, in a 4WD crew cab standard box configuration. 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.<\/p>\n
The iconic Denali four-bar, chrome grille with round air inlets distinguishes the Sierra Denali HD on the outside, along with body-color bumpers, chrome door handles, chrome accents and 18- and 20-inch polished forged aluminum wheels.<\/p>\n
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\u2019s beneath the skin, however, where they are truly separated from their predecessors \u2013 and the competition. Highlights include:<\/p>\n
* Increased towing capability (20,000 lbs.\/9,072 kg) and payload (6,335 lbs.\/2,873 kg) supported by all-new fully-boxed, high-strength-steel frames and strong suspensions for maximum capability and exceptional ride characteristics
\n* Five of the 12 3500HD models offer a payload capability greater than 6,000 pounds vs. Ford Super Duty\u2019s single model greater than 6,000 pounds
\n* Thirteen of the 22 2500HD models offer a payload capability greater than 3,100 pounds vs. Ford Super Duty\u2019s single model greater than 3,100 pounds
\n* New 6.6L Duramax diesel delivers segment-best power, up to 11-percent greater highway fuel economy, up to 63-percent lower emissions, B20 biodiesel capability and quicker acceleration
\n* Larger gas tank and fuel economy improvements allow up to 680 miles (1,090 km) between fill-ups with the 6.6L Duramax turbo diesel
\n* All-new \u201csmart\u201d exhaust brake feature provides greater control on grades and reduced brake pad wear
\n* An array of control features, including trailer sway control, integrated trailer brake control, hill start assist, automatic grade braking, intelligent brake assist and larger brakes
\n* Purposeful technology, including available mobile WiFi, USB connectivity, Bluetooth connectivity, XM Satellite Radio, OnStar 9.0 and navigation.<\/p>\n
\u201cGMC has been one of the industry\u2019s 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,\u201d said Hutchinson. \u201cFrom the segment-best diesel power to the segment-best warranty, these trucks deliver strength and peace of mind on all fronts.\u201d<\/p>\n
Following are details of the new and redesigned product features of the Sierra Denali HD and the other Sierra 2500HD and 3500HD models.<\/p>\n
The Sierra HD lineup brings greater capability.<\/strong><\/p>\nThe details<\/strong>: Depending on the model, Sierra HD models offer:<\/p>\n* Increased fifth-wheel towing capacity of 20,000 pounds (9,072 kg)
\n* Conventional towing capacity increases up to 23 percent, with a maximum of 16,000 pounds (7,272 kg)
\n* Improved payload capability of 6,335 pounds (2,873 kg) on a complete vehicle
\n* Gross Combined Weight Rating increases to 27,500 pounds (12,500 kg)
\n* Gross Vehicle Weight Ratings increases up to 17 percent to 13,000 pounds (5,909 kg)
\n* Front Axle Weight Rating increases by up to 25 percent to 6,000 pounds (2,721 kg)
\n* Snow plow capability for all 4WD cab configurations.<\/p>\n
\u201cYou 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,\u201d said Rick Spina, vehicle line executive. \u201cThey accelerate quicker \u2013 especially when fully loaded \u2013 stop more confidently and deliver a smooth, quiet driving experience that you have to experience to fully appreciate.\u201d<\/p>\n
The new 2011 Sierra Denali pairs capability with premium features.<\/strong><\/p>\nThe details<\/strong>: The new Sierra Denali HD is offered exclusively in the Crew Cab standard box configuration on the 2500HD chassis, providing a spacious cabin with room for up to five. As with other Denali models, including the new Acadia Denali, the cabin is unique with standard premium touches. It includes 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.<\/p>\nOn the capability front, the Sierra Denali has a gross vehicle weight rating (GVWR) of 10,000 pounds (4,536 kg), a payload capacity of 2,959 pounds (1,342 kg) and a maximum trailering rating of 15,600 pounds (7,076 kg) with a fifth-wheel hitch. The maximum conventional hitch trailering rating is 13,000 pounds (5,897 kg).<\/p>\n
Engineers developed 11 all-new, fully boxed frame assemblies to improve durability and ride characteristics and support increased capabilities.<\/strong><\/p>\nThe details:<\/strong> 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 16,000 pounds (7,257 kg).<\/p>\nSierra HDs feature a new, stronger independent front suspension \u2013 enabling snow plow installation on all 4WD models.<\/strong><\/p>\nThe details: <\/strong>A completely redesigned independent front suspension system offers up to a 25-percent greater front axle weight rating \u2013 up to 6,000 pounds (2,721 kg) front gross axle weight rating (FGAWR) \u2013 so a snow plow can be used on all 4WD cab configurations with the available snow plow prep package. Sierra\u2019s 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. 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\u2019s a new upper shock mount attachment design that\u2019s positively connected to the frame with two fasteners. This design eliminates squeaks and clunks, while supporting higher load capability and increased durability.<\/p>\nCOMPETITIVE FACTS: Compared to competitors\u2019 beam-axle front suspensions, the Sierra\u2019s 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.<\/p>\n
A new asymmetrical leaf-spring rear suspension supports greater loads.<\/strong><\/p>\nThe details:<\/strong> Matching the Sierra HD\u2019s 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. 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) \u2013 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 \u2013 the latter representing a nearly 14-percent increase over the previous 8,200-pound (3,727 kg) rating.<\/p>\nSierra HDs deliver a more refined driving experience, with more capable ride, handling and steering.<\/strong><\/p>\nThe details: <\/strong>Longer wheelbases \u2013 ranging from 133.6 inches (3,395 mm) to 167.7 inches (4,259 mm) \u2013 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\u2019 weight ratings, while balancing excellent ride characteristics. Also enhancing the driving experience is a revised steering system designed to support the trucks\u2019 greater front gross axle weight rating. 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.<\/p>\nThe new 6.6L Duramax turbo diesel delivers segment-leading torque and up to 63-percent lower NOx emissions; and is B20-capable.<\/strong><\/p>\nThe details:<\/strong> The workhorse Duramax 6.6L turbo diesel V-8 is more powerful and durable for 2011, delivering segment-best horsepower and torque \u2013 397 horsepower (296 kW) at 3,000 rpm and 765 lb.-ft. of torque (1,037 Nm) at 1,600 rpm \u2013 lower emissions and B20 biodiesel capability that promotes a domestically produced renewable fuel. The new Duramax 6.6L features:<\/p>\n* NOx emissions reduced at least 63 percent over 2010 models
\n* Quieter operation
\n* High-pressure (30,000 psi\/2,000 bar) Piezo-actuated fuel system for greater fuel efficiency, improved performance and reduced emissions
\n* \u201cSmart\u201d exhaust brake feature that enables controlled vehicle slowdown on downhill grades without actuating the brakes
\n* Selective catalytic reduction after-treatment system using diesel exhaust fluid (DEF) injection to provide the best overall diesel characteristics and performance \u2013 with a range of about 5,000 miles (8,000 km) between DEF refills
\n* Combustion and after-treatment have been optimized to provide about 700 miles (1,125 km) between diesel particulate filter regenerations \u2013 a 75-percent improvement over the previous system and a significant contributor to improved fuel efficiency, as the regeneration process requires additional fuel
\n* B20 biodiesel capability for an alternative fueling option
\n* Internal revisions that improve durability.<\/p>\n
With nearly 1.3 million Duramax 6.6L engines produced since 2000, they have proven exceptionally durable and dependable. The internal elements that helped build its reputation are enhanced for 2011, including:<\/p>\n
* Main bearings\u2019 profiles changed to enhance oil film thickness
\n* Oil pump flow increased for increased pressure at low speeds
\n* Modified turbocharger oil circuit for increased pressure at the turbo and faster oil delivery
\n* The connecting rods\u2019 pin ends are modified to provide increased piston support
\n* New, higher-strength piston design that eliminates bushings to provide lower reciprocating weight
\n* An EGR cooler bypass reduces high-mileage soot deposits in the cooler and EGR circuit.<\/p>\n
COMPETITIVE FACTS<\/strong>: Compared with Ford Super Duty\u2019s urea-based system, Sierra HD\u2019s 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 \u2013 a better capability than Ford\u2019s.<\/p>\nNew Allison 1000 six-speed automatic transmission works with the Duramax 6.6L to deliver greater fuel economy, quicker acceleration, greater towing capability and exhaust brake system.<\/strong><\/p>\nThe details<\/strong>: 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 \u201cspin loss\u201d \u2013 meaning, the transmission channels more of the engine\u2019s 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\u2019s about 0.3-second and 0.5-second quicker, respectively, than previous models.<\/p>\nA strengthened Vortec 6.0L\/Hydra-Matic 6L90 six-speed powertrain is standard in all models.<\/strong><\/p>\nThe details<\/strong>: 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.<\/p>\nThe 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.<\/p>\n
The 6L90 is enhanced for greater strength, smoothness and quietness via:<\/p>\n
* Adding four attachment bosses to the transfer case adapter (4WD models) for increased strength and smoother, quieter performance<\/p>\n
* Increasing the cross section size of the transfer case adapter for greater strength
\n* Adding a new, stronger output shaft
\n* Adding a new heat shield and vent hose.<\/p>\n
COMPETITIVE FACTS:<\/strong> Ford\u2019s new Super Duty models share the same transmission between their gas and diesel engines. Sierra HDs\u2019 Allison 1000 and Hydra-Matic 6L90 transmission were developed for the specific horsepower, torque and operating range differences that distinguish the diesel and gas engines.<\/p>\nBrake feel and performance is greatly improved.<\/strong><\/p>\nThe details:<\/strong> 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 \u2013 14 inches (355 mm) \u2013 and width on all models to support their increased capacity, weight ratings and trailering ratings, while the calipers are stiffer and stronger. The hydroboost brake booster calibration is revised for reduced pedal effort, and the travel of the pedal is also revised for 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.<\/p>\nSierra HD\u2019s \u2018smart\u2019 exhaust brake feature provides greater control and reduces brake pad wear.<\/strong><\/p>\nThe details<\/strong>: A new standard feature on Duramax-equipped models is the \u201csmart\u201d 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.<\/p>\nComprehensive safety features and functional technologies include trailer sway control system and hill start assist.<\/strong><\/p>\nThe details<\/strong>: The 2011 Sierra 2500HD and 3500HD models have a comprehensive roster of safety features and functional technologies that include:<\/p>\n* StabiliTrak electronic stability control system on all single-rear-wheel models
\n* Larger, four-wheel disc brakes with standard four-wheel ABS
\n* A new high-strength steel tubular frame cross member that enhances safety and improves crashworthiness
\n* Seat pelvic\/thorax and head curtain side air bags available on 2500HD
\n* Available rear backup camera
\n* Segment-exclusive OnStar 9.0
\n* Trailer sway control system on all single-rear-wheel models
\n* Hill start assist (standard on single-rear-wheel models)<\/p>\n
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. 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 \u2013 it is particularly effective when towing, giving the driver time to switch from the brake pedal to the gas pedal without rolling.<\/p>\n
The GMC Sierra HD lineup is broader than ever.<\/strong><\/p>\nThe details: <\/strong>For 2011, the Sierra heavy-duty lineup expands to include 11 2500HD models and eight single- and dual-rear-wheel 3500HD models \u2013 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.<\/p>\nSierra HD professional-grade interiors are refined and well-appointed \u2013 and ready to work.<\/strong><\/p>\nThe details:<\/strong> From the available remote starting feature to the unimpeded access offered by the 170-degree-opening rear access doors on extended cab models, the 2011 Sierra HD models reflect the professional grade blend of refinement and functionality for which GMC is known. The interiors have excellent attention to detail and are quieter \u2013 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.<\/p>\nAlong 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.<\/p>\n
Sierra HDs are ready for the long haul \u2013 and the cold.<\/strong><\/p>\nThe details:<\/strong> 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\u2019s quick, reliable start-up, with a starting time on par with gas engines. Its glow plug cycle time is the segment\u2019s best in all temperatures, taking no more than 3 seconds in temperatures as low as -20 F (-29 C). There\u2019s also a cab heat-up feature that allows the engine to idle faster in low temperatures to warm the interior more quickly.<\/p>\nThe 2011 Sierra HD lineup has the best warranty coverage in America.<\/strong><\/p>\nThe details<\/strong>: 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.<\/p>\n SPECIFICATIONS
\n<\/strong>2011 SIERRA DENALI HD <\/strong><\/p>\nOverview <\/strong><\/p>\n\n\n\n| Models:<\/td>\n | 2500HD Denali crew cab std. box, 4WD<\/td>\n<\/tr>\n |
\n| Body style\/driveline:<\/td>\n | 5-passenger crew cab; 3\/4-ton; 4-wheel-drive heavy-duty pickup<\/td>\n<\/tr>\n |
\n| Construction:<\/td>\n | body on frame<\/td>\n<\/tr>\n |
\n| EPA vehicle class:<\/td>\n | full-size truck<\/td>\n<\/tr>\n |
\n| Manufacturing location:<\/td>\n | Flint, Mich.<\/td>\n<\/tr>\n |
\n| Key competitors:<\/td>\n | Ford Super Duty Series pickup, Ram heavy-duty pickup<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Engines <\/strong><\/p>\n\n\n\n| <\/td>\n | Vortec 6.0L V-8 (L96) <\/strong><\/td>\n Duramax 6.6L Turbo Diesel V-8 (LML) <\/strong><\/td>\n<\/tr>\n\n| Type\u00a0:<\/td>\n | 6.0L V-8<\/td>\n | 6.6L V-8<\/td>\n<\/tr>\n | \n| Displacement (cu in\/cc):<\/td>\n | 364\/5967<\/td>\n | 403\/6599<\/td>\n<\/tr>\n | \n| Bore & stroke (in\/mm):<\/td>\n | 4.00 x 3.62\/101.6 x 92<\/td>\n | 4.06 x 3.9\/103 x 99<\/td>\n<\/tr>\n | \n| Block material:<\/td>\n | cast iron<\/td>\n | cast iron<\/td>\n<\/tr>\n | \n| Cylinder head material:<\/td>\n | cast aluminum<\/td>\n | cast aluminum<\/td>\n<\/tr>\n | \n| Valvetrain:<\/td>\n | overhead valve, two valves per cylinder, variable valve timing<\/td>\n | overhead valve, four valves per cylinder<\/td>\n<\/tr>\n | \n| Ignition system:<\/td>\n | coil-near-plug, platinum- tipped spark plugs, low-resistance spark plug wires<\/td>\n | compression, glow plug start aid<\/td>\n<\/tr>\n | \n| Fuel delivery:<\/td>\n | sequential fuel injection<\/td>\n | direct injection diesel with high-pressure common rail<\/td>\n<\/tr>\n | \n| Compression ratio:<\/td>\n | 9.6:1<\/td>\n | 16.0:1<\/td>\n<\/tr>\n | \nHorsepower
\n(hp\/kW @ rpm):<\/td>\n | 360\/268 @ 5400<\/td>\n | 397\/296 @ 3000<\/td>\n<\/tr>\n | \nTorque
\n(lb-ft\/Nm @ rpm)\u00a0:<\/td>\n | 380\/515 @ 4200<\/td>\n | 765\/1037 @ 1600<\/td>\n<\/tr>\n | \n| Recommended fuel:<\/td>\n | regular unleaded<\/td>\n | diesel or B20<\/td>\n<\/tr>\n | \n| Maximum engine speed (rpm):<\/td>\n | 6000<\/td>\n | 4800<\/td>\n<\/tr>\n | \n| Emissions controls:<\/td>\n | three-way catalytic converter, positive crankcase ventilation, evaporative collection system<\/td>\n | cooled exhaust gas recirculation (EGR), EGR cooling-bypass system, diesel particulate filter system (DPF), selective catalyst reduction (SCR)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Transmissions <\/strong><\/p>\n\n\n\n| <\/td>\n | Hydra-Matic 6L90 <\/strong><\/td>\n Allison 1000 <\/strong><\/td>\n<\/tr>\n\n| Type\u00a0:<\/td>\n | six-speed automatic
\n(with Vortec 6.0L)<\/td>\n | six-speed automatic
\n(with Duramax 6.6L)<\/td>\n<\/tr>\n | \n| Gear ratios (:1):<\/td>\n | <\/td>\n | <\/td>\n<\/tr>\n | \n| First:<\/td>\n | 4.03<\/td>\n | 3.10<\/td>\n<\/tr>\n | \n| Second:<\/td>\n | 2.36<\/td>\n | 1.81<\/td>\n<\/tr>\n | \n| Third:<\/td>\n | 1.53<\/td>\n | 1.41<\/td>\n<\/tr>\n | \n| Fourth:<\/td>\n | 1.15<\/td>\n | 1.00<\/td>\n<\/tr>\n | \n| Fifth:<\/td>\n | 0.85<\/td>\n | 0.71<\/td>\n<\/tr>\n | \n| Sixth:<\/td>\n | 0.67<\/td>\n | 0.61<\/td>\n<\/tr>\n | \n| Reverse:<\/td>\n | 3.06<\/td>\n | 4.49<\/td>\n<\/tr>\n | \n| Final drive ratio:<\/td>\n | 3.73 or 4.10<\/td>\n | 3.73<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Chassis\/Suspension <\/strong><\/p>\n\n\n\n| Front:<\/td>\n | all models: std long- and short-arm independent front torsion bar suspension<\/td>\n<\/tr>\n | \n| Rear:<\/td>\n | semi-elliptic two-stage multi-leaf spring<\/td>\n<\/tr>\n | \n| Steering type:<\/td>\n | integral power-assisted recirculating ball<\/td>\n<\/tr>\n | \n| Steering ratio:<\/td>\n | 16.1<\/td>\n<\/tr>\n | \n| Steering wheel turns, lock-to-lock:<\/td>\n | 3.57<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Turning Circle <\/strong><\/p>\n\n\n\n| Turning circle, curb-to-curb (ft\/m):<\/td>\n | 50.5\/15.4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Brakes <\/strong><\/p>\n\n\n\n| Type:<\/td>\n | power-assisted, Hydroboost brake-apply system, four-wheel disc, four-wheel ABS<\/td>\n<\/tr>\n | \n| Rotor diameter x thickness (in\/mm):<\/td>\n | front: 13.97 x 1.57\/355 x 40
\nrear: 14.17 x 1.34\/360 x 34<\/td>\n<\/tr>\n | \n| Total swept area (sq in\/sq cm):<\/td>\n | front: 277.7\/1791
\nrear: 277.5\/1790<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Wheels\/Tires <\/strong><\/p>\n\n\n\n| Wheel size and type:<\/td>\n | 18 x 8.0-in aluminum
\n20 x 8.5-in aluminum<\/td>\n<\/tr>\n | \n| Tire size:<\/td>\n | LT265\/70R18 all-season
\nLT265\/60R20 all-terrain<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Dimensions
\nExterior <\/strong><\/p>\n\n\n\n| Wheelbase (in\/mm):<\/td>\n | 153.7\/3904.4<\/td>\n<\/tr>\n | \n| Overall length (in\/mm):<\/td>\n | 240.1\/6100<\/td>\n<\/tr>\n | \n| Overall width (in\/mm):<\/td>\n | 80\/2032<\/td>\n<\/tr>\n | \n| Overall height: (in\/mm):<\/td>\n | 78.3\/1989.5<\/td>\n<\/tr>\n | \n| Track \u2013 front (in\/mm):<\/td>\n | 68.8\/1748<\/td>\n<\/tr>\n | \n| Track \u2013 rear (in\/mm):<\/td>\n | 67.3\/1709<\/td>\n<\/tr>\n | \n| Min. ground clearance (in\/mm):<\/td>\n | front: 9.7\/247
\nrear: 8.2\/209<\/td>\n<\/tr>\n | \n| Step-in height (in\/mm):<\/td>\n | 26\/661<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Weight and payload ratings <\/strong><\/p>\n\n\n\n| <\/td>\n | GVWR (lb\/kg) <\/strong><\/td>\n Curb Weight (lb\/kg) <\/strong><\/td>\n Payload (lb\/kg) <\/strong><\/td>\n<\/tr>\n\n| Crew cab, std. box (4WD):<\/td>\n | 6.0L: 9500\/4173
\n6.6L: 10000\/4173<\/td>\n | 6.0L: 6377\/2892
\n6.6L: 7208\/3269<\/td>\n | 6.0L: 2959\/1342
\n6.6L: 2792\/1266<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Cargo box <\/strong><\/p>\n\n\n\n| Cargo volume (cu ft\/L):<\/td>\n | 60.7\/1718<\/td>\n<\/tr>\n | \n| Length at floor (in\/mm):<\/td>\n | 78.8\/2003<\/td>\n<\/tr>\n | \n| Width at floor (in\/mm):<\/td>\n | 62.4\/1586<\/td>\n<\/tr>\n | \n| Tailgate width (in\/mm):<\/td>\n | 61.5\/1564<\/td>\n<\/tr>\n | \n| Width between wheel housings (in\/mm):<\/td>\n | 50.6\/1286<\/td>\n<\/tr>\n | \n| Inside height (in\/mm):<\/td>\n | 21\/533<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Interior <\/strong><\/p>\n\n\n\n| Headroom (in\/mm):<\/td>\n | front: 41.2\/1048<\/td>\n<\/tr>\n | \n| <\/td>\n | rear: 40.5\/1030<\/td>\n<\/tr>\n | \n| Legroom (in\/mm):<\/td>\n | front: 41.3\/1049<\/td>\n<\/tr>\n | \n| <\/td>\n | rear: 39\/991<\/td>\n<\/tr>\n | \n| Shoulder room (in\/mm):<\/td>\n | front: 65.2\/1657<\/td>\n<\/tr>\n | \n| <\/td>\n | rear: 65.1\/1655<\/td>\n<\/tr>\n | \n| Hip room (in\/mm):<\/td>\n | front: 60.3\/1532<\/td>\n<\/tr>\n | \n| <\/td>\n | rear: 65.4\/1663<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Capacities <\/strong><\/p>\n\n\n\n| Seating:<\/td>\n | 5<\/td>\n<\/tr>\n | \n| Fuel tank (gal\/L):<\/td>\n | 36\/136<\/td>\n<\/tr>\n | \n| Engine oil (qt\/L):<\/td>\n | 6.0L: 6.0\/5.7
\n6.6L: 10\/9.5<\/td>\n<\/tr>\n | \n| Cooling system (qt\/L):<\/td>\n | 6.0L: 16.4\/15.5
\n6.6L: 25.4\/24<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Trailering <\/strong><\/p>\n\n\n\n| <\/td>\n | Trailer towing maximum with ball hitch (lb\/kg) <\/strong><\/td>\nTrailer towing maximum with fifth-wheel hitch (lb\/kg) <\/strong><\/td>\n<\/tr>\n\n| Sierra Denali HD:<\/td>\n | 6.0L (3.73 axle): 9300\/4218
\n6.0L (4.10 axle): 13000\/5897
\n6.6L (3.73 axle): 13000\/5897<\/td>\n | 6.0L (3.73 axle): 9300\/4218
\n6.0L (4.10 axle): 13700\/6214
\n6.6L (3.73 axle): 15600\/7076<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n*SAE certified.
\nNote: Information shown is current at time of publication.<\/p>\n SPECIFICATIONS <\/strong><\/p>\n 2011 SIERRA 3500HD <\/strong><\/p>\n Overview <\/strong><\/p>\n\n\n\n| Models:<\/td>\n | 3500HD reg. cab, long box, 2WD & 4WD<\/td>\n<\/tr>\n | \n| <\/td>\n | 3500HD ext. cab, long box, 2WD & 4WD<\/td>\n<\/tr>\n | \n| <\/td>\n | 3500HD crew cab, long box, 2WD & 4WD<\/td>\n<\/tr>\n | \n| <\/td>\n | 3500HD crew cab, std. box, 2WD & 4WD<\/td>\n<\/tr>\n | \n| Body style\/driveline:<\/td>\n | 2-3 passenger regular cab or 5-6 passenger extended cab,<\/td>\n<\/tr>\n | \n| <\/td>\n | 5-6-passenger crew cab<\/td>\n<\/tr>\n | \n| <\/td>\n | 1-ton; 2- and 4-wheel-drive heavy-duty pickup<\/td>\n<\/tr>\n | \n| Construction:<\/td>\n | body on frame<\/td>\n<\/tr>\n | \n| EPA vehicle class:<\/td>\n | full-size truck<\/td>\n<\/tr>\n | \n| Manufacturing location:<\/td>\n | Flint, Mich., Ft. Wayne, Ind.<\/td>\n<\/tr>\n | \n| Key competitors:<\/td>\n | Ford Super Duty Series pickup, Ram heavy-duty pickup<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Engines <\/strong><\/p>\n\n\n\n| <\/td>\n | Vortec 6.0L V-8 (L96) <\/strong><\/td>\n Duramax 6.6L Turbo Diesel V-8 (LML) <\/strong><\/td>\n<\/tr>\n\n| Type:<\/td>\n | 6.0L V-8<\/td>\n | 6.6L V-8<\/td>\n<\/tr>\n | \n| Displacement (cu in\/cc):<\/td>\n | 364\/5967<\/td>\n | 403\/6599<\/td>\n<\/tr>\n | \n| Bore & stroke (in\/mm):<\/td>\n | 4.00 x 3.62\/101.6 x 92<\/td>\n | 4.06 x 3.9\/103 x 99<\/td>\n<\/tr>\n | \n| Block material:<\/td>\n | cast iron<\/td>\n | cast iron<\/td>\n<\/tr>\n | \n| Cylinder head material:<\/td>\n | cast aluminum<\/td>\n | cast aluminum<\/td>\n<\/tr>\n | \n| Valvetrain:<\/td>\n | overhead valve, two valves per cylinder, variable valve timing<\/td>\n | overhead valve, four valves per cylinder<\/td>\n<\/tr>\n | \n| Ignition system:<\/td>\n | coil-near-plug, platinum- tipped spark plugs, low-resistance spark plug wires<\/td>\n | compression, glow plug start aid<\/td>\n<\/tr>\n | \n| Fuel delivery:<\/td>\n | sequential fuel injection<\/td>\n | direct injection diesel with high-pressure common rail<\/td>\n<\/tr>\n | \n| Compression ratio:<\/td>\n | 9.6:1<\/td>\n | 16.0:1<\/td>\n<\/tr>\n | \nHorsepower
\n(hp\/kW @ rpm):<\/td>\n | 360\/268 @ 5400 < 10,000 GVWR
\n322\/240 @ 4400 > 10,000 GVWR<\/td>\n | 397\/296 @ 3000<\/td>\n<\/tr>\n | \nTorque
\n(lb-ft\/Nm @ rpm)\u00a0:<\/td>\n | 380\/515 @ 4200
\n(all models)<\/td>\n | 765\/1037 @ 1600<\/td>\n<\/tr>\n | \n| Recommended fuel:<\/td>\n | regular unleaded<\/td>\n | diesel or B20<\/td>\n<\/tr>\n | \n| Maximum engine speed (rpm):<\/td>\n | 6000<\/td>\n | 4800<\/td>\n<\/tr>\n | \n| Emissions controls:<\/td>\n | three-way catalytic converter, positive crankcase ventilation, evaporative collection system<\/td>\n | cooled exhaust gas recirculation (EGR), EGR cooling-bypass system, diesel particulate filter system (DPF), selective catalyst reduction (SCR)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Transmissions <\/strong><\/p>\n\n\n\n| <\/td>\n | Hydra-Matic 6L90 <\/strong><\/td>\n Allison 1000 <\/strong><\/td>\n<\/tr>\n\n| Type:<\/td>\n | 6-speed automatic (with Vortec 6.0L)<\/td>\n | 6-speed automatic (with Duramax 6.6L)<\/td>\n<\/tr>\n | \n| Gear ratios (:1):<\/td>\n | <\/td>\n | <\/td>\n<\/tr>\n | \n| First:<\/td>\n | 4.03<\/td>\n | 3.10<\/td>\n<\/tr>\n | \n| Second:<\/td>\n | 2.36<\/td>\n | 1.81<\/td>\n<\/tr>\n | \n| Third:<\/td>\n | 1.53<\/td>\n | 1.41<\/td>\n<\/tr>\n | \n| Fourth:<\/td>\n | 1.15<\/td>\n | 1.00<\/td>\n<\/tr>\n | \n| Fifth:<\/td>\n | 0.85<\/td>\n | 0.71<\/td>\n<\/tr>\n | \n| Sixth:<\/td>\n | 0.67<\/td>\n | 0.61<\/td>\n<\/tr>\n | \n| Reverse:<\/td>\n | 3.06<\/td>\n | 4.49<\/td>\n<\/tr>\n | \n| Final drive ratio:<\/td>\n | 3.73 or 4.10<\/td>\n | 3.73<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nChassis\/Suspension<\/h2>\n\n\n\n| Front:<\/td>\n | all models: std long- and short-arm independent front torsion bar suspension<\/td>\n<\/tr>\n | \n| Rear:<\/td>\n | semi-elliptic three-stage multi-leaf spring<\/td>\n<\/tr>\n | \n| Steering type:<\/td>\n | integral power-assisted recirculating ball<\/td>\n<\/tr>\n | \n| Steering ratio:<\/td>\n | 16:1<\/td>\n<\/tr>\n | \n| Steering wheel turns, lock-to-lock:<\/td>\n | 3.57<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Turning Circle <\/strong><\/p>\n\n\n\n| <\/td>\n | Regular Cab Long Box <\/strong><\/td>\n Extended Cab Long Box <\/strong><\/td>\n Crew Cab Long Box <\/strong><\/td>\n Crew Cab Std. Box <\/strong><\/td>\n<\/tr>\n\nTurning circle, curb-to-curb
\n(ft\/m):<\/td>\n | SRW: 44.9\/13.7
\nDRW:45.6\/13.9<\/td>\n | SRW: 51.8\/15.8
\nDRW: 52.8\/16.1<\/td>\n | SRW: 54.8\/16.7
\nDRW:55.4\/16.9<\/td>\n | SRW: 50.5\/15.4
\nDRW: N\/A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Brakes <\/strong><\/p>\n\n\n\n| Type:<\/td>\n | power-assisted, Hydroboost brake-apply system, four-wheel disc, four-wheel ABS<\/td>\n<\/tr>\n | \nRotor diameter x thickness
\n(in\/mm):<\/td>\n | front: 13.97 x 1.57\/355 x 40
\nrear: 13.97 x 1.57\/355 x 40<\/td>\n<\/tr>\n | \n| Total swept area (sq in\/sq cm):<\/td>\n | front: 278\/1793
\nrear: 278\/1793<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Wheels\/Tires <\/strong><\/p>\n\n\n\n| Wheel size and type<\/td>\n | <\/td>\n<\/tr>\n | \n| Single rear wheels:<\/td>\n | 18 x 8.0-in steel
\n18 x 8.0-in aluminum<\/td>\n<\/tr>\n | \n| Dual rear wheels:<\/td>\n | 17 x 6.5-in steel<\/td>\n<\/tr>\n | \n| Tire size<\/td>\n | <\/td>\n<\/tr>\n | \n| Single rear wheels:<\/td>\n | LT265\/70R18 all season or all terrain<\/td>\n<\/tr>\n | \n| Dual rear wheels:<\/td>\n | LT235\/80R17 all season or all terrain<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Dimensions
\n<\/strong>Exterior <\/strong><\/p>\n | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
![\"\"](\"http:\/\/www.egmcartech.com\/wp-content\/uploads\/2010\/03\/2011_gmc_sierra_denali_hd_images_main.jpg\" "\\"2011")
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