2011 Chevrolet Silverado HD

On a validation pressure of the brand new, 2011 Chevrolet Silverado HD heavy-obligation vans, engineer Brent Deep towed a 20,000-pound (nine,072 kg) trailer for 245 miles (four hundred km) alongside I-70 among Denver and Grand Junction, Colo. - and he slightly touched the brakes the complete way.

Deep depended on the Chevrolet Silverado's new, clever exhaust brake machine to sluggish the truck/trailer aggregate on descents, supporting show the brand new machine is appropriate for the maximum worrying situations. It changed into a pressure throughout the coronary heart of the Rocky Mountains and a number of the interstate machine's steepest grades, with altitudes starting from Denver's about five,000 feet (1,525 m) to greater than eleven,one hundred feet (three,four hundred m) on the Eisenhower Tunnel.

"It takes a few braveness to go away your foot off the brake, however the Chevrolet Silverado's Duramax engine and Allison transmission carry out the undertaking with smoothness and self belief that genuinely impresses," stated Deep. "Better still, the exhaust brake machine can assist amplify brake pad existence and assist keep away from overheating the brakes on lengthy descents."

The exhaust brake machine function is simply one of the factors that makes the brand new 2011 Chevrolet Silverado 2500HD and 3500HD fashions the maximum succesful withinside the industry. They pass on sale this summer.

"We sought the enter of our clients all through the improvement of the 2011 Chevrolet Silverado HD to supply a truck that meets or exceeds their each need," stated Jim Campbell, Chevrolet widespread manager. "It gives extra electricity and functionality - consisting of elegance-main gasoline economic system, trailering and payload scores - and has greater strength, speeds up faster and has decrease emissions. That sounds just like the very definition of no compromises."

The Chevrolet Silverado HD heavy-obligation lineup is broader than ever, with eleven 2500HD fashions and 8 unmarried- and dual-rear-wheel 3500HD fashions - consisting of a brand new 3500HD Crew Cab with a 6.five-foot shipment container. WT, LT and LTZ trim tiers are provided, and famous functions which include the EZ Lift tailgate and rearview digital digicam machine return. All fashions convey extra functionality, stepped forward trip and coping with and a extra feeling of driving force manage. Depending at the version:

• Segment-great fifth-wheel towing ability of 20,000 pounds (nine,072 kg)
• Segment-great traditional towing ability will increase as much as 23 percentage, with a most of sixteen,000 pounds (7,272 kg)
• Segment-great payload functionality of 6,335 pounds (2,873 kg) on a entire automobile
• Segment-great Gross Combined Weight Rating will increase to 27,500 pounds (12,500 kg)
• Gross Vehicle Weight Ratings will increase as much as 17 percentage to 13,000 pounds (five,909 kg)
• Front Axle Weight Rating will increase through up to twenty-five percentage to 6,000 pounds (2,721 kg)
• Snow plow functionality is now enabled for all 4 wheel drive cab configurations

There also are more suitable powertrains, consisting of a brand new Duramax 6.6L diesel/Allison one thousand six-pace transmission that gives the exhaust brake machine, new the front and rear suspensions, an stepped forward brake machine, hill begin help, trailer sway manage machine and greater.

"Along with all their heavy-obligation equipment, those vans are designed to be elegant and refined, internal and out," stated Campbell. "We paid near interest to all of the details, giving them a distinctive, muscular look at the outdoors and a well-appointed indoors with the comfort, comfort and protection functions clients recognize."

Outside, the 2011 Silverado 2500HD and 3500HD fashions are outstanding through a strength dome-fashion hood with a brand new, louvered layout, in addition to a brand new grille and full-width stainless-steel the front bumper. A new lineup of 17-, 18- and 20-inch wheel/tire mixtures is featured, too (20-inch polished solid aluminum wheels are to be had on 2500HD).

Designers and engineers left nearly no bolt unturned all through the complete remodel of the vans. Here are eleven key factors that display the 2011 Chevrolet Silverado 2500HD and 3500HD are geared up for any task and any competitor:

New frames

In the search to comprehensively remodel the Chevrolet Silverado HD chassis to enhance sturdiness and trip, at the same time as additionally helping improved functionality, engineers evolved eleven all-new, completely boxed body assemblies. The frames have improved pass sections and use greater high-electricity metal for extra sturdiness, better towing ability and stepped forward trip and coping with; the the front sections are hydroformed.

The bending and beaming stiffness of the frames is improved ninety two percentage and 20 percentage, respectively, with the completely boxed sections improving torsional stiffness through a component of 5. Also, large engine and transmission mounts, coupled with a one hundred twenty five-percentage-stiffer the front body structure, offer extra vibration manage, at the same time as hydraulic frame mounts are included below the cab phase on prolonged and group cab fashions for a greater remoted experience internal.

Engineers addressed not unusualplace purchaser and aftermarket makes use of while designing the brand new frames, consisting of including get admission to holes to the rear body phase to permit less complicated set up of fifth-wheel/gooseneck-fashion hitches. Also, the body-installed hitch for traditional trailering is more potent, with a container-tube layout. It helps as much as sixteen,000 pounds (7,257 kg).

New and sturdy impartial the front suspension

A absolutely redesigned impartial the front suspension machine gives as much as a 25-percentage extra the front axle weight score - as much as 6,000 pounds (2,721 kg) the front gross axle weight score (FGAWR) - allowing a snow plow for use on all 4 wheel drive cab configurations with the to be had snow plow prep package, at the same time as additionally helping stepped forward trip and coping with traits.

Chevrolet Silverado's signature short-lengthy arm/torsion bar the front suspension layout is retained, however now functions new, solid metal higher manage fingers which can be more potent and lighter than their predecessors. The new decrease manage fingers are manufactured from precision-machined solid iron to address the extra loads. Five one-of-a-kind torsion bar charges guide 5 one-of-a-kind the front gross axle weight scores (a unmarried torsion bar changed into formerly used for all fashions). This enables stabilize the variety of trim heights of numerous fashions below load, at the same time as improving look, coping with, sturdiness, tire put on and alignment. The trim top is adjusted on every bar through a unmarried bolt, effortlessly permitting the peak to be modified to account for the burden of a snow plow or different accessories.

The Chevrolet Silverado HD the front suspension now makes use of a couple of urethane jounce bumpers on every aspect, rather than one, for stepped forward load management; and there is a brand new higher surprise mount attachment layout it really is undoubtedly linked to the body with fasteners. This layout gets rid of squeaks and clunks, at the same time as helping better load functionality and improved sturdiness.

Compared to competitors' beam-axle the front suspension, the Silverado's impartial the front suspension offers a higher trip, greater correct trim top manage (with fewer elements) and extra flexibility to modify the alignment for weight and tire sensitivity.

New asymmetrical leaf-spring rear suspension

Commensurate with the Chevrolet Silverado HD's extra electricity and functionality is a rear suspension designed to guide extra loads. It functions a brand new, large asymmetrical leaf-spring layout that still contributes to stepped forward trip and coping with traits.

The asymmetrical layout is derived from unequal the front and rear spring 1/2 of lengths, which limit axle hop and beautify traction manage performance. 2500HD fashions function a -degree leaf-spring layout, at the same time as 3500HD fashions have a three-degree layout. All fashions function three-inch-wide (seventy six mm) leaf springs which can be 20-percentage wider than preceding fashions.

The large leaf-spring layout helps improved rear gross axle weight scores throughout the board. On the 2500HD fashions, the score is 6,2 hundred pounds (2,818 kg) - up from 6,084 (2,765). On 3500HD fashions, the score will increase to 7,050 pounds (three,204 kg) on unmarried-rear-wheel fashions and nine,375 pounds (4,261 kg) on dual-rear-wheel fashions - the latter representing a almost 14-percentage boom over the preceding eight,2 hundred-pound (three,727 kg) score.

Segment-main towing and payload functionality

Stronger frames, suspension structures with extra weight scores and more suitable powertrain structures make a contribution to the Chevy Silverado HD's elegance-main towing and payload functionality. The specs charts blanketed under define capacities for every version and/or configuration, however right here are the important thing facts:

• The most traditional (ball hitch) towing score will increase to sixteen,000 pounds (7,257 kg)
• A Silverado 3500HD group cab/lengthy container can tow as much as 20,000 pounds (nine,091 kg) with a fifth-wheel hitch. The 2010 Ram 3500 has a most score of 17,six hundred pounds (eight,000 kg) and the 2010 Ford F-350 is rated at a most of 18,800 pounds (eight,545 kg). It must be mentioned that at the same time as Ford claimed segment-main trailering and payload all through its current assertion of the 2011 Super Duty fashions, no towing scores had been issued
• The most payload (3500HD) is 6,335 pounds (2,873 kg) - it really is almost eleven percentage extra than the 2010 Ford F-350's five,730-pound (2,604 kg) score and approximately 24 percentage greater than the 2010 Ram 3500's five,130-pound (2,331 kg) scores. Again, at the same time as claiming segment-main payload for the 2011 Super Duty fashions, Ford did now no longer announce the scores

New 6.6L Duramax diesel and Allison one thousand six-pace aggregate

Helping the brand new 2011 Chevrolet Silverado HD vans supply their great-in-elegance abilities is a new edition of the workhorse Duramax 6.6L diesel and Allison one thousand six-pace computerized transmission powertrain aggregate. The Duramax 6.6L is greater effective and sturdy and the Allison one thousand is more potent and enables permit new functions, consisting of the exhaust brake machine. Together, this stepped forward model of a established aggregate is likewise anticipated to supply segment-great gasoline economic system.

The Duramax 6.6L's new and stepped forward functions include:

• Horsepower and torque anticipated to pinnacle preceding version
• NOx emissions decreased at the least sixty three percentage over 2010 fashions
• Quieter operation
• High-stress (30,000 psi/2,000 bar) Piezo-actuated gasoline machine for extra gasoline performance, stepped forward overall performance and decreased emissions
• Exhaust brake machine that allows managed automobile slowdown on downhill grades with out actuating the brakes
• Selective catalytic discount after-remedy machine the use of diesel exhaust fluid (DEF) injection to offer the great universal diesel traits and overall performance - with a number approximately five,000 miles (eight,000 km) among DEF refills
• Combustion and after-remedy were optimized to offer approximately seven-hundred miles (1,one hundred twenty five km) among diesel particulate clear out out regenerations - a 75-percentage development over the preceding machine and considerable contributor to stepped forward gasoline performance, because the regeneration manner calls for extra gasoline
• B20 biodiesel functionality for an opportunity fueling option
• Internal revisions that enhance sturdiness

With almost 1.three million Duramax 6.6L engines produced considering the fact that 2000, they have got established enormously long lasting and dependable. The inner factors that helped construct its popularity are more suitable for 2011, consisting of:

• Main bearings' profiles modified to beautify oil movie thickness
• Oil pump go with the drift improved for improved stress at low speeds
• The turbocharger's oil circuit is modified to offer improved stress on the rapid and quicker oil delivery
• The connecting rods' pin ends are changed to offer improved piston guide
• New, better-electricity piston layout that gets rid of bushings to offer decrease reciprocating weight
• An EGR cooler skip reduces high-mileage soot deposits withinside the cooler and EGR circuit

The more suitable Allison one thousand for 2011 is bolstered to address the better torque functionality of the brand new 6.6L Duramax engine, at the same time as additionally supporting enhance gasoline economic system and offer seamless help with a brand new exhaust brake machine. Greater performance is introduced via decreased "spin loss" - meaning, the transmission channels greater of the engine's strength to the axles, permitting it to do greater with much less gasoline.

The Allison one thousand additionally functions driving force shift manage with faucet up/faucet down moving and a patented improved idle mode cab heat-up function. Also, the tow/haul mode reduces shift biking for higher manage and stepped forward cooling while towing or hauling heavy loads. The six-pace configuration keeps its overdrive gears for optimum performance.

Performance with the Duramax/Allison aggregate is likewise stepped forward over preceding fashions, with initial trying out displaying 0-60 mph instances of much less than nine seconds and quarter-mile instances of much less than sixteen seconds in 2500HD fashions. That's approximately 0.three-2nd and 0.five-2nd faster, respectively, than preceding fashions.

Strengthened Vortec 6.0L/Hydra-Matic 6L90 six-pace powertrain

The venerable Vortec 6.0L fueloline V-eight with variable valve timing returns to the brand new heavy-obligation vans, along side a bolstered model of the Hydra-Matic 6L90 six-pace computerized transmission. This aggregate offers exquisite overall performance and performance, with a extra emphasis on low-rpm strength.

A new camshaft profile withinside the Vortec 6.0L enables the engine produce greater torque decrease withinside the rpm band, for stepped forward release experience and a extra feeling of universal overall performance at better altitudes and while towing a trailer.

The 6L90 is more suitable for extra electricity, smoothness and tranquility through:

• Adding 4 attachment bosses to the switch case adapter (4 wheel drive fashions) for improved electricity and smoother, quieter overall performance
• Increasing the pass phase length of the switch case adapter for extra electricity
• Adding a brand new, more potent output shaft
• Adding a brand new warmth protect and vent hose

Exhaust brake machine

A new function on Duramax-ready fashions is an exhaust brake machine. This driving force-selectable function makes use of the turbine manage of the variable geometry turbocharger and the compression of the engine to generate backpressure, slowing the automobile with out making use of the brakes. It is a clever machine incorporated with the cruise manage function and varies the braking to account for the grade and automobile load.

The exhaust brake machine lets in for simply easy using and towing, with seamless and quiet operation. It additionally enables extend brake existence and stops overheating the brakes on lengthy, downhill grades.

Large brakes

Brake experience and overall performance is substantially stepped forward with the 2011 Silverado HD vans. The trendy 4-wheel disc machine is absolutely remodeled to supply smoother, greater instant and assured-feeling overall performance. Four-wheel, 4-channel ABS is trendy on all unmarried-rear-wheel fashions and a three-channel machine is trendy on dual-rear-wheel fashions.

The the front and rear rotors are large in diameter - 14 inches (355 mm) - and width on all fashions to guide their improved ability, weight scores and trailering scores, at the same time as the calipers are stiffer and more potent. The hydroboost brake booster calibration is revised for decreased pedal attempt and the journey of the pedal is likewise revised for a greater comfortable, assured experience.

Larger wheel hub and bearing assemblies supplement the brand new brake machine and the rear rotors connect to the wheel hubs for less complicated servicing.

Refined and succesful trip, coping with and guidance

Longer wheelbases - starting from 133.6 inches (three,395 mm) to 167.7 inches (4,259 mm) - and wider the front/rear tracks beautify the trip and coping with traits of the Silverado 2500HD and 3500HD, giving them a extra feeling of smoothness and manage.

The longer wheelbases and wider tracks are complemented through the brand new, stiffer frames, new jounce bumpers, surprise mounts and hydraulic frame mounts to offer a solid, clean and remoted using enjoy. New shocks had been especifically valved to guide the brand new vans' weight scores, at the same time as balancing exquisite trip traits.

Also improving the using enjoy is a revised guidance machine designed to guide the vans' extra the front gross axle weight score. It consists of a brand new, large guidance gear, strength guidance pumps and linkages. The pumps (one-of-a-kind elements for fueloline and diesel fashions) supply extra stress for decreased guidance attempt in low-pace and parking maneuvers; they may be additionally quieter. On a few fashions, the brand new linkages function a compliant joint brought on the pitman attachment to beautify coping with.

Comprehensive protection and purposeful technology

The 2011 Silverado 2500HD and 3500HD fashions have a complete roster of protection functions and purposeful technology that include:

• StabiliTrak digital balance manage machine on all unmarried-rear-wheel fashions
• Larger, 4-wheel disc brakes with trendy 4-wheel ABS
• A new high-electricity metal tubular body pass member that complements protection and improves crashworthiness
• Seat pelvic/thorax and head curtain aspect air luggage to be had on 2500HD
• Available rear backup digital digicam
• Segment-distinctive OnStar nine.0
• Trailer sway manage machine on all unmarried-rear-wheel fashions
• Hill begin help (trendy on unmarried-rear-wheel fashions)

Trailer sway manage machine offers an brought degree of self belief while towing a trailer. The machine senses situations of trailer sway and intervenes with braking and/or decreased engine strength to convey the trailer below manage and hold it on its meant path. The machine will use electric powered trailer brakes while a trailer is plugged into the same old wiring harness of the truck and its overall performance calls for no enter from the motive force.

The hill begin help machine is routinely engaged while sensors stumble on the automobile is on grade of approximately five percentage or extra. It holds the brakes for approximately 1.five seconds or till the fueloline pedal is pressed, stopping rollback - it's far mainly powerful while towing, giving the motive force time to exchange from the brake pedal to the fueloline pedal with out rolling.

Lives bigger, drives higher, works harder

From the to be had far flung beginning function to the unimpeded get admission to provided through the 170-degree-establishing rear get admission to doorways on prolonged cab fashions, the 2011 Chevy Silverado HD fashions stay bigger, pressure higher and paintings harder. The interiors are refined, with stepped forward quietness and interest to detail, however designed for working. Numerous garage booths offer blanketed get admission to for the whole lot from paintings gloves to laptops.

Indeed, for plenty proprietors the Chevrolet Silverado HDs are cellular workspaces, presenting cellular WiFi, USB connectivity, Bluetooth connectivity, XM Satellite Radio and a navigation machine. Multiple fee factors permit more than one digital gadgets to function simultaneously; and while ready with the to be had navigation machine, XM NavTraffic gives real-time updates of site visitors situations (in decided on areas) that may assist plan the simplest course to the task site.

Cold-climate clients will recognize the Duramax 6.6L's quick, dependable begin-up, with a beginning time on par with fueloline engines. Its glow plug cycle time is the segment's great in all temperatures, taking no greater than three seconds in temperatures as low as -20 F (-29 C). There's additionally a cab warmth-up function that lets in the engine to idle quicker in low temperatures to heat up the indoors quicker.

And while you are at the road, the Chevrolet Silverado HDs take you farther with out stopping. A new, 36-gallon (136 L) gasoline tank is trendy on all fashions and, with the stepped forward gasoline performance of the powertrains, allows a cruising variety of up approximately 680 miles (1,090 km) with the Duramax 6.6L. That's the equal of a ride from Houston to Oklahoma City and again to Dallas on a unmarried tank.

Finally, all 2011 Silverado 2500HD and 3500HD vans paintings below the great guarantee insurance in America - 5-year/one hundred,000-mile constrained powertrain guarantee, plus roadside help, courtesy transportation and different functions that offer guarantee that Chevrolet backs its vans confidently.On a validation pressure of the brand new, 2011 Chevrolet Silverado HD heavy-obligation vans, engineer Brent Deep towed a 20,000-pound (nine,072 kg) trailer for 245 miles (four hundred km) alongside I-70 among Denver and Grand Junction, Colo. - and he slightly touched the brakes the complete way.

Deep depended on the Chevrolet Silverado's new, clever exhaust brake machine to sluggish the truck/trailer aggregate on descents, supporting show the brand new machine is appropriate for the maximum worrying situations. It changed into a pressure throughout the coronary heart of the Rocky Mountains and a number of the interstate machine's steepest grades, with altitudes starting from Denver's about five,000 feet (1,525 m) to greater than eleven,one hundred feet (three,four hundred m) on the Eisenhower Tunnel.

"It takes a few braveness to go away your foot off the brake, however the Chevrolet Silverado's Duramax engine and Allison transmission carry out the undertaking with smoothness and self belief that genuinely impresses," stated Deep. "Better still, the exhaust brake machine can assist amplify brake pad existence and assist keep away from overheating the brakes on lengthy descents."

The exhaust brake machine function is simply one of the factors that makes the brand new 2011 Chevrolet Silverado 2500HD and 3500HD fashions the maximum succesful withinside the industry. They pass on sale this summer.

"We sought the enter of our clients all through the improvement of the 2011 Chevrolet Silverado HD to supply a truck that meets or exceeds their each need," stated Jim Campbell, Chevrolet widespread manager. "It gives extra electricity and functionality - consisting of elegance-main gasoline economic system, trailering and payload scores - and has greater strength, speeds up faster and has decrease emissions. That sounds just like the very definition of no compromises."

The Chevrolet Silverado HD heavy-obligation lineup is broader than ever, with eleven 2500HD fashions and 8 unmarried- and dual-rear-wheel 3500HD fashions - consisting of a brand new 3500HD Crew Cab with a 6.five-foot shipment container. WT, LT and LTZ trim tiers are provided, and famous functions which include the EZ Lift tailgate and rearview digital digicam machine return. All fashions convey extra functionality, stepped forward trip and coping with and a extra feeling of driving force manage. Depending at the version:

• Segment-great fifth-wheel towing ability of 20,000 pounds (nine,072 kg)
• Segment-great traditional towing ability will increase as much as 23 percentage, with a most of sixteen,000 pounds (7,272 kg)
• Segment-great payload functionality of 6,335 pounds (2,873 kg) on a entire automobile
• Segment-great Gross Combined Weight Rating will increase to 27,500 pounds (12,500 kg)
• Gross Vehicle Weight Ratings will increase as much as 17 percentage to 13,000 pounds (five,909 kg)
• Front Axle Weight Rating will increase through up to twenty-five percentage to 6,000 pounds (2,721 kg)
• Snow plow functionality is now enabled for all 4 wheel drive cab configurations

There also are more suitable powertrains, consisting of a brand new Duramax 6.6L diesel/Allison one thousand six-pace transmission that gives the exhaust brake machine, new the front and rear suspensions, an stepped forward brake machine, hill begin help, trailer sway manage machine and greater.

"Along with all their heavy-obligation equipment, those vans are designed to be elegant and refined, internal and out," stated Campbell. "We paid near interest to all of the details, giving them a distinctive, muscular look at the outdoors and a well-appointed indoors with the comfort, comfort and protection functions clients recognize."

Outside, the 2011 Silverado 2500HD and 3500HD fashions are outstanding through a strength dome-fashion hood with a brand new, louvered layout, in addition to a brand new grille and full-width stainless-steel the front bumper. A new lineup of 17-, 18- and 20-inch wheel/tire mixtures is featured, too (20-inch polished solid aluminum wheels are to be had on 2500HD).

Designers and engineers left nearly no bolt unturned all through the complete remodel of the vans. Here are eleven key factors that display the 2011 Chevrolet Silverado 2500HD and 3500HD are geared up for any task and any competitor:

New frames

In the search to comprehensively remodel the Chevrolet Silverado HD chassis to enhance sturdiness and trip, at the same time as additionally helping improved functionality, engineers evolved eleven all-new, completely boxed body assemblies. The frames have improved pass sections and use greater high-electricity metal for extra sturdiness, better towing ability and stepped forward trip and coping with; the the front sections are hydroformed.

The bending and beaming stiffness of the frames is improved ninety two percentage and 20 percentage, respectively, with the completely boxed sections improving torsional stiffness through a component of 5. Also, large engine and transmission mounts, coupled with a one hundred twenty five-percentage-stiffer the front body structure, offer extra vibration manage, at the same time as hydraulic frame mounts are included below the cab phase on prolonged and group cab fashions for a greater remoted experience internal.

Engineers addressed not unusualplace purchaser and aftermarket makes use of while designing the brand new frames, consisting of including get admission to holes to the rear body phase to permit less complicated set up of fifth-wheel/gooseneck-fashion hitches. Also, the body-installed hitch for traditional trailering is more potent, with a container-tube layout. It helps as much as sixteen,000 pounds (7,257 kg).

New and sturdy impartial the front suspension

A absolutely redesigned impartial the front suspension machine gives as much as a 25-percentage extra the front axle weight score - as much as 6,000 pounds (2,721 kg) the front gross axle weight score (FGAWR) - allowing a snow plow for use on all 4 wheel drive cab configurations with the to be had snow plow prep package, at the same time as additionally helping stepped forward trip and coping with traits.

Chevrolet Silverado's signature short-lengthy arm/torsion bar the front suspension layout is retained, however now functions new, solid metal higher manage fingers which can be more potent and lighter than their predecessors. The new decrease manage fingers are manufactured from precision-machined solid iron to address the extra loads. Five one-of-a-kind torsion bar charges guide 5 one-of-a-kind the front gross axle weight scores (a unmarried torsion bar changed into formerly used for all fashions). This enables stabilize the variety of trim heights of numerous fashions below load, at the same time as improving look, coping with, sturdiness, tire put on and alignment. The trim top is adjusted on every bar through a unmarried bolt, effortlessly permitting the peak to be modified to account for the burden of a snow plow or different accessories.

The Chevrolet Silverado HD the front suspension now makes use of a couple of urethane jounce bumpers on every aspect, rather than one, for stepped forward load management; and there is a brand new higher surprise mount attachment layout it really is undoubtedly linked to the body with fasteners. This layout gets rid of squeaks and clunks, at the same time as helping better load functionality and improved sturdiness.

Compared to competitors' beam-axle the front suspension, the Silverado's impartial the front suspension offers a higher trip, greater correct trim top manage (with fewer elements) and extra flexibility to modify the alignment for weight and tire sensitivity.

New asymmetrical leaf-spring rear suspension

Commensurate with the Chevrolet Silverado HD's extra electricity and functionality is a rear suspension designed to guide extra loads. It functions a brand new, large asymmetrical leaf-spring layout that still contributes to stepped forward trip and coping with traits.

The asymmetrical layout is derived from unequal the front and rear spring 1/2 of lengths, which limit axle hop and beautify traction manage performance. 2500HD fashions function a -degree leaf-spring layout, at the same time as 3500HD fashions have a three-degree layout. All fashions function three-inch-wide (seventy six mm) leaf springs which can be 20-percentage wider than preceding fashions.

The large leaf-spring layout helps improved rear gross axle weight scores throughout the board. On the 2500HD fashions, the score is 6,2 hundred pounds (2,818 kg) - up from 6,084 (2,765). On 3500HD fashions, the score will increase to 7,050 pounds (three,204 kg) on unmarried-rear-wheel fashions and nine,375 pounds (4,261 kg) on dual-rear-wheel fashions - the latter representing a almost 14-percentage boom over the preceding eight,2 hundred-pound (three,727 kg) score.

Segment-main towing and payload functionality

Stronger frames, suspension structures with extra weight scores and more suitable powertrain structures make a contribution to the Chevy Silverado HD's elegance-main towing and payload functionality. The specs charts blanketed under define capacities for every version and/or configuration, however right here are the important thing facts:

• The most traditional (ball hitch) towing score will increase to sixteen,000 pounds (7,257 kg)
• A Silverado 3500HD group cab/lengthy container can tow as much as 20,000 pounds (nine,091 kg) with a fifth-wheel hitch. The 2010 Ram 3500 has a most score of 17,six hundred pounds (eight,000 kg) and the 2010 Ford F-350 is rated at a most of 18,800 pounds (eight,545 kg). It must be mentioned that at the same time as Ford claimed segment-main trailering and payload all through its current assertion of the 2011 Super Duty fashions, no towing scores had been issued
• The most payload (3500HD) is 6,335 pounds (2,873 kg) - it really is almost eleven percentage extra than the 2010 Ford F-350's five,730-pound (2,604 kg) score and approximately 24 percentage greater than the 2010 Ram 3500's five,130-pound (2,331 kg) scores. Again, at the same time as claiming segment-main payload for the 2011 Super Duty fashions, Ford did now no longer announce the scores

New 6.6L Duramax diesel and Allison one thousand six-pace aggregate

Helping the brand new 2011 Chevrolet Silverado HD vans supply their great-in-elegance abilities is a new edition of the workhorse Duramax 6.6L diesel and Allison one thousand six-pace computerized transmission powertrain aggregate. The Duramax 6.6L is greater effective and sturdy and the Allison one thousand is more potent and enables permit new functions, consisting of the exhaust brake machine. Together, this stepped forward model of a established aggregate is likewise anticipated to supply segment-great gasoline economic system.

The Duramax 6.6L's new and stepped forward functions include:

• Horsepower and torque anticipated to pinnacle preceding version
• NOx emissions decreased at the least sixty three percentage over 2010 fashions
• Quieter operation
• High-stress (30,000 psi/2,000 bar) Piezo-actuated gasoline machine for extra gasoline performance, stepped forward overall performance and decreased emissions
• Exhaust brake machine that allows managed automobile slowdown on downhill grades with out actuating the brakes
• Selective catalytic discount after-remedy machine the use of diesel exhaust fluid (DEF) injection to offer the great universal diesel traits and overall performance - with a number approximately five,000 miles (eight,000 km) among DEF refills
• Combustion and after-remedy were optimized to offer approximately seven-hundred miles (1,one hundred twenty five km) among diesel particulate clear out out regenerations - a 75-percentage development over the preceding machine and considerable contributor to stepped forward gasoline performance, because the regeneration manner calls for extra gasoline
• B20 biodiesel functionality for an opportunity fueling option
• Internal revisions that enhance sturdiness

With almost 1.three million Duramax 6.6L engines produced considering the fact that 2000, they have got established enormously long lasting and dependable. The inner factors that helped construct its popularity are more suitable for 2011, consisting of:

• Main bearings' profiles modified to beautify oil movie thickness
• Oil pump go with the drift improved for improved stress at low speeds
• The turbocharger's oil circuit is modified to offer improved stress on the rapid and quicker oil delivery
• The connecting rods' pin ends are changed to offer improved piston guide
• New, better-electricity piston layout that gets rid of bushings to offer decrease reciprocating weight
• An EGR cooler skip reduces high-mileage soot deposits withinside the cooler and EGR circuit

The more suitable Allison one thousand for 2011 is bolstered to address the better torque functionality of the brand new 6.6L Duramax engine, at the same time as additionally supporting enhance gasoline economic system and offer seamless help with a brand new exhaust brake machine. Greater performance is introduced via decreased "spin loss" - meaning, the transmission channels greater of the engine's strength to the axles, permitting it to do greater with much less gasoline.

The Allison one thousand additionally functions driving force shift manage with faucet up/faucet down moving and a patented improved idle mode cab heat-up function. Also, the tow/haul mode reduces shift biking for higher manage and stepped forward cooling while towing or hauling heavy loads. The six-pace configuration keeps its overdrive gears for optimum performance.

Performance with the Duramax/Allison aggregate is likewise stepped forward over preceding fashions, with initial trying out displaying 0-60 mph instances of much less than nine seconds and quarter-mile instances of much less than sixteen seconds in 2500HD fashions. That's approximately 0.three-2nd and 0.five-2nd faster, respectively, than preceding fashions.

Strengthened Vortec 6.0L/Hydra-Matic 6L90 six-pace powertrain

The venerable Vortec 6.0L fueloline V-eight with variable valve timing returns to the brand new heavy-obligation vans, along side a bolstered model of the Hydra-Matic 6L90 six-pace computerized transmission. This aggregate offers exquisite overall performance and performance, with a extra emphasis on low-rpm strength.

A new camshaft profile withinside the Vortec 6.0L enables the engine produce greater torque decrease withinside the rpm band, for stepped forward release experience and a extra feeling of universal overall performance at better altitudes and while towing a trailer.

The 6L90 is more suitable for extra electricity, smoothness and tranquility through:

• Adding 4 attachment bosses to the switch case adapter (4 wheel drive fashions) for improved electricity and smoother, quieter overall performance
• Increasing the pass phase length of the switch case adapter for extra electricity
• Adding a brand new, more potent output shaft
• Adding a brand new warmth protect and vent hose

Exhaust brake machine

A new function on Duramax-ready fashions is an exhaust brake machine. This driving force-selectable function makes use of the turbine manage of the variable geometry turbocharger and the compression of the engine to generate backpressure, slowing the automobile with out making use of the brakes. It is a clever machine incorporated with the cruise manage function and varies the braking to account for the grade and automobile load.

The exhaust brake machine lets in for simply easy using and towing, with seamless and quiet operation. It additionally enables extend brake existence and stops overheating the brakes on lengthy, downhill grades.

Large brakes

Brake experience and overall performance is substantially stepped forward with the 2011 Silverado HD vans. The trendy 4-wheel disc machine is absolutely remodeled to supply smoother, greater instant and assured-feeling overall performance. Four-wheel, 4-channel ABS is trendy on all unmarried-rear-wheel fashions and a three-channel machine is trendy on dual-rear-wheel fashions.

The the front and rear rotors are large in diameter - 14 inches (355 mm) - and width on all fashions to guide their improved ability, weight scores and trailering scores, at the same time as the calipers are stiffer and more potent. The hydroboost brake booster calibration is revised for decreased pedal attempt and the journey of the pedal is likewise revised for a greater comfortable, assured experience.

Larger wheel hub and bearing assemblies supplement the brand new brake machine and the rear rotors connect to the wheel hubs for less complicated servicing.

Refined and succesful trip, coping with and guidance

Longer wheelbases - starting from 133.6 inches (three,395 mm) to 167.7 inches (4,259 mm) - and wider the front/rear tracks beautify the trip and coping with traits of the Silverado 2500HD and 3500HD, giving them a extra feeling of smoothness and manage.

The longer wheelbases and wider tracks are complemented through the brand new, stiffer frames, new jounce bumpers, surprise mounts and hydraulic frame mounts to offer a solid, clean and remoted using enjoy. New shocks had been especifically valved to guide the brand new vans' weight scores, at the same time as balancing exquisite trip traits.

Also improving the using enjoy is a revised guidance machine designed to guide the vans' extra the front gross axle weight score. It consists of a brand new, large guidance gear, strength guidance pumps and linkages. The pumps (one-of-a-kind elements for fueloline and diesel fashions) supply extra stress for decreased guidance attempt in low-pace and parking maneuvers; they may be additionally quieter. On a few fashions, the brand new linkages function a compliant joint brought on the pitman attachment to beautify coping with.

Comprehensive protection and purposeful technology

The 2011 Silverado 2500HD and 3500HD fashions have a complete roster of protection functions and purposeful technology that include:

• StabiliTrak digital balance manage machine on all unmarried-rear-wheel fashions
• Larger, 4-wheel disc brakes with trendy 4-wheel ABS
• A new high-electricity metal tubular body pass member that complements protection and improves crashworthiness
• Seat pelvic/thorax and head curtain aspect air luggage to be had on 2500HD
• Available rear backup digital digicam
• Segment-distinctive OnStar nine.0
• Trailer sway manage machine on all unmarried-rear-wheel fashions
• Hill begin help (trendy on unmarried-rear-wheel fashions)

Trailer sway manage machine offers an brought degree of self belief while towing a trailer. The machine senses situations of trailer sway and intervenes with braking and/or decreased engine strength to convey the trailer below manage and hold it on its meant path. The machine will use electric powered trailer brakes while a trailer is plugged into the same old wiring harness of the truck and its overall performance calls for no enter from the motive force.

The hill begin help machine is routinely engaged while sensors stumble on the automobile is on grade of approximately five percentage or extra. It holds the brakes for approximately 1.five seconds or till the fueloline pedal is pressed, stopping rollback - it's far mainly powerful while towing, giving the motive force time to exchange from the brake pedal to the fueloline pedal with out rolling.

Lives bigger, drives higher, works harder

From the to be had far flung beginning function to the unimpeded get admission to provided through the 170-degree-establishing rear get admission to doorways on prolonged cab fashions, the 2011 Chevy Silverado HD fashions stay bigger, pressure higher and paintings harder. The interiors are refined, with stepped forward quietness and interest to detail, however designed for working. Numerous garage booths offer blanketed get admission to for the whole lot from paintings gloves to laptops.

Indeed, for plenty proprietors the Chevrolet Silverado HDs are cellular workspaces, presenting cellular WiFi, USB connectivity, Bluetooth connectivity, XM Satellite Radio and a navigation machine. Multiple fee factors permit more than one digital gadgets to function simultaneously; and while ready with the to be had navigation machine, XM NavTraffic gives real-time updates of site visitors situations (in decided on areas) that may assist plan the simplest course to the task site.

Cold-climate clients will recognize the Duramax 6.6L's quick, dependable begin-up, with a beginning time on par with fueloline engines. Its glow plug cycle time is the segment's great in all temperatures, taking no greater than three seconds in temperatures as low as -20 F (-29 C). There's additionally a cab warmth-up function that lets in the engine to idle quicker in low temperatures to heat up the indoors quicker.

And while you are at the road, the Chevrolet Silverado HDs take you farther with out stopping. A new, 36-gallon (136 L) gasoline tank is trendy on all fashions and, with the stepped forward gasoline performance of the powertrains, allows a cruising variety of up approximately 680 miles (1,090 km) with the Duramax 6.6L. That's the equal of a ride from Houston to Oklahoma City and again to Dallas on a unmarried tank.

Finally, all 2011 Silverado 2500HD and 3500HD vans paintings below the great guarantee insurance in America - 5-year/one hundred,000-mile constrained powertrain guarantee, plus roadside help, courtesy transportation and different functions that offer guarantee that Chevrolet backs its vans confidently.