New 2015 GMC Sierra HD: Smart, Capable and Comfortable

Bold style, enhanced interior and helpful technologies support class-leading capabilities


DETROIT – Designed to deliver class-leading capability with enhanced comfort and smarter technologies, the new 2015 GMC Sierra HD lineup advances a 111-year legacy of professional heavy-duty trucks.

Sierra 2500HD and 3500HD models – including Sierra Denali HD – feature bold, new styling and all-new, better-connected interiors. They are also offered with the Duramax 6.6L turbo-diesel engine all Allison 1000 six-speed transmission powertrain combination – a proven combination with more than 1.5 million sold since its introduction in 2000.

Trim levels include a Sierra base model, as well as SLE, SLT and Denali. The distinctive Sierra Denali HD, which accounts for more than one-third of Sierra HD crew cab sales, is offered exclusively as a crew cab, matching do-it-all capability with an exclusive package of design and upscale interior ameniti


"Sierra HD trucks are engineered without compromise to deliver not only the capability today’s heavy-duty truck customers demand, but the quality and refinement that inspire confidence with every task. We’ve been doing this for more than a century, and nobody knows trucks like GMC."

Tony DiSalle, vice president of GMC Marketing



The Sierra HDs’ new styling and an all-new, more comfortable and technology-infused interior are carried forward from the 2014 Sierra 1500, including new double cab and revised crew cab body styles. Larger rear doors on each, along with new seat designs, enable easier entry and exit from the rear seat and two inches of additional legroom on crew cabs.

The new interior is also designed to help drivers and passengers whether they’re on the job or on a weekend getaway, with easier-to-reach, more intuitively located controls, more storage compartments, more plug-ins for electronic devices and next-generation GMC IntelliLink – with an eight-inch-diagonal color touch screen.

OnStar with 4G LTE enables greater connectivity than ever before, along with available built-in Wi-Fi hot-spot (available in September 2014).

“Forget the notion that heavy-duty trucks are basic trucks with a trailer hitch,” said DiSalle. “The 2015 Sierra HD trucks can haul the heaviest load with unmatched comfort and technology that make the job easier.”

Regular, double cab and crew cab models are offered across the lineup. 2500HD and 3500HD regular cab models are matched an 8’ box, while 2500HD double cab and crew cab models are available with 6’6” or 8’ boxes. Sierra 3500HD double cab is offered exclusively with the 8’ box, while 3500HD crew cabs are available with the 6’6” and 8’ boxes. Dual-rear-wheel configurations are also available on 3500HD.

Gas and Duramax diesel powertrains are offered across the lineup, including an expanded bi-fuel option that allows the gas engine to run on compressed natural gas. The Duramax has been developed to operate for at least 200,000 miles (322,000 km) on a rough-duty cycle without the need for a major overhaul.

The powertrains contribute to the new Sierra HDs’ greater payload and towing ratings than previous models, including the segment’s highest payload – 7,374 pounds – and the highest conventional trailering rating – 19,600 pounds. The maximum fifth-wheel/gooseneck trailering rating increases to 23,200 pounds.

Additional new and enhanced features for the 2015 Sierra HD lineup include:

  • Standard CornerStep rear bumper, EZ Lift and Lower tailgate (standard on SLE, SLT and Denali), standard locking tailgate, standard upper tie-downs and other features that make cargo handling easier
  • Standard StabiliTrak with Trailer Sway Control on all models, including 3500HD dually
  • Integrated cruise control, auto grade braking and diesel exhaust braking, for greater driving control and reduced brake wear on grades
  • Enhanced cooling airflow, which enables the Duramax turbo diesel and 6.0L gas engine to better maintain full power, even under heavy loads and high ambient temperatures.

All models are backed by GMC Pro Grade Protection, with two years of scheduled maintenance – including diesel exhaust fluid – a three-year/36,000-miles bumper-to-bumper warranty and a five-year/100,000-mile powertrain warranty.

Sierra Denali HD details


The distinctive Sierra Denali HD features a signature Denali chrome grille, unique interior decorative trim, a polished stainless steel exhaust outlet (gas models) and body-color front and rear bumpers. Complementing the soft-touch instrument panel trim and aluminum trim are Denali-specific interior details, including script on the bright door sills and embossed into the front seats.

Sierra Denali's high-tech interior also features an exclusive eight-inch customizable driver display that can show relevant settings, audio and navigation information in the instrument panel. Sierra Denali's standard eight-inch Color Touch navigation radio with IntelliLink serves as the main hub for Bluetooth-connected phones and portable devices connected through five standard USB ports.

Other features standard on Sierra Denali include projector-style headlamps with light-emitting-diode (LED) signature daytime running lights, a Bose audio system, heated and cooled leather front bucket seats, a heated steering wheel and a power sliding rear window with defogger.

2015 GMC Sierra 2500 HD SLT crew cab pickup

The 2015 Sierra 2500 features an all-new exterior designed to reduce wind noise and enhance powertrain cooling for more consistent performance. The all-new interior is quiet and comfortable, with ample storage for work or travel and the intuitive connectivity of IntelliLink. Customers can chose from gasoline, CNG or diesel power, including the legendary Duramax turbodiesel and Allison transmission.

2015 GMC Sierra Denali 3500 HD crew cab pickup with dual rear wheels

The 2015 Sierra 3500 features an all-new exterior designed to reduce wind noise and enhance powertrain cooling for more consistent performance. The all-new interior is quiet and comfortable, with ample storage for work or travel and the intuitive connectivity of IntelliLink. Customers can chose from gasoline, CNG or diesel power, including the legendary Duramax turbodiesel and Allison transmission. The Sierra 3500 offers class-leading available payload and conventional towing.

2015 GMC Sierra Denali 3500 HD crew cab pickup with dual rear wheels

The 2015 Sierra 3500 features an all-new exterior designed to reduce wind noise and enhance powertrain cooling for more consistent performance. The all-new interior is quiet and comfortable, with ample storage for work or travel and the intuitive connectivity of IntelliLink. Customers can chose from gasoline, CNG or diesel power, including the legendary Duramax turbodiesel and Allison transmission. The Sierra 3500 offers class-leading available payload and conventional towing.

2015 GMC Sierra Denali HD

The 2015 Sierra Denali HD features an all-new interior that is quiet and comfortable, with ample storage for work or travel and the intuitive connectivity of IntelliLink. Customers can chose from gasoline, CNG or diesel power, including the legendary Duramax turbodiesel and Allison transmission.

Sierra HD design and exterior features


Sierra HD trucks have a new face that conveys GMC's professional grade aesthetic with greater technical precision, including an all-new headlamp and grille design, power-dome hood – with specific badging on Duramax-equipped models – and a one-piece chrome bumper (body-color bumper on Denali). SLT and Denali models feature GMC's signature LED daytime running lamps within the headlamp housings.  

The new exterior design backs up its bold, advanced styling with greater refinement and functionality. Tighter body gaps allow the trucks to slip through the air with reduced wind noise, while the new grille design supports enhanced engine-cooling performance. It enhances efficiency and ensures Sierra HD delivers optimal performance under the toughest conditions, such as towing on a mountain grade.

New inlaid doors, which fit into recesses in the bodyside, help reduce wind noise for a quieter cab, and – like the 2014 Sierra 1500 – a new double cab body replaces the previous extended cab. It features longer, front-hinged rear doors with outside pull handles at the rear, for improved access in tight parking spaces.

New 6' 6' and 8'; boxes are stronger and more durable, easier to use and offer greater cargo flexibility. They come with a two-tier loading design and offer more than four feet of loading space between the wheel houses, allowing standard 4' x 8' sheets of plywood to stack flatly on the box floor.  

The new CornerStep rear bumper – also introduced on Sierra 1500 – is standard. It features integrated steps at each corner designed to accommodate large boots, with textured pads for sure-footed grip. The EZ Lift-and-Lower tailgate is standard on SLE, SLT and Denali models, along with LED cargo box lighting. A factory-installed spray-in bed liner is available.

Intuitive, integrated interior


The 2015 Sierra HD lineup benefits from interior introduced on the 2014 Sierra 1500. Premium materials, greater attention to detail and purposeful technologies define the passenger space, with soft-touch materials and available aluminum trim providing premium accents to an interior designed to be a productive, easy-to-use environment.

Sierra HD's seats use dual-density foam designed to stay comfortable over long hours and continue to look great after years of use. Leather-appointed and cloth seating are offered, and Sierra's new high-wear cloth is designed to last longer and resist staining.

Available IntelliLink connectivity uses a customizable eight-inch color touch screen with an intuitive layout and easy-to-read icons that control audio features, a Pandora app, Bluetooth phone features and available navigation with all-new map displays. Many of the system's features can be controlled by Natural Language Voice Recognition, allowing drivers to keep their eyes on the road and hands on the wheel.

Heavy-duty foundation and enhanced vehicle control technologies


All Sierra HD models feature fully boxed frame assemblies – 18 different assemblies that accommodate more than 150 possible vehicle configurations across the lineup.

A short-long arm/torsion bar front suspension features forged steel upper control arms and precision-machined cast iron lower control arms. Five different torsion bar rates support five different front gross axle weight ratings to help stabilize the range of trim heights of various models under load – including snow plows – while enhancing appearance, handling, durability, tire wear and alignment.

At the rear, an asymmetrical leaf-spring design minimizes axle hop and enhances traction control efficiency. A two-stage leaf-spring design is used on 2500HD models and three-stage design is employed on 3500HD model.

Sierra HD's advanced vehicle control technologies are designed to make tough jobs easier and more comfortable, while also contributing to a safe driving experience, particularly when hauling cargo or towing a trailer.

StabiliTrak electronic stability control is standard on all single-rear-wheel models and – new for 2015 – 3500HD dual-rear-wheel models. It incorporates trailer sway control and hill start assist.  Additionally, available cruise control, auto grade braking, and diesel exhaust brake features help the vehicle maintain a set speed up and down grades, even when towing a heavy trailer.

With the diesel exhaust brake feature, the turbocharger is used to smoothly and quietly create additional backpressure in the engine to help slow the vehicle. The combination of the exhaust brake and the automatic transmission downshifts helps the driver maintain the desired speed, even on steep grades.

A rear-vision camera system is standard on SLE, SLT and Denali, providing a view of items behind the vehicle. It can also assist with lining up in front of a trailer.

2015 Sierra HD pickups are assembled in Ft. Wayne, Ind. and Flint, Mich., and are backed by GMC Pro Grade Protection:

  • Three-year/36,000-mile limited new vehicle warranty
  • Five-year/100,000-mile limited powertrain warranty
  • Two-year/24,000-mile schedule maintenance coverage, including oil changes, tire rotations, multipoint inspection and even diesel exhaust fluid refills.


2015 GMC Sierra Denali 3500 HD crew cab pickup with dual rear wheels

The 2015 Sierra 3500 features an all-new exterior designed to reduce wind noise and enhance powertrain cooling for more consistent performance. The all-new interior is quiet and comfortable, with ample storage for work or travel and the intuitive connectivity of IntelliLink. Customers can chose from gasoline, CNG or diesel power, including the legendary Duramax turbodiesel and Allison transmission. The Sierra 3500 offers class-leading available payload and conventional towing.

2015 GMC Sierra HD

The 2015 Sierra HD features an all-new interior that is quiet and comfortable, with ample storage for work or travel and the intuitive connectivity of IntelliLink. Customers can chose from gasoline, CNG or diesel power, including the legendary Duramax turbodiesel and Allison transmission.

2015 GMC SIERRA 2500HD SPECIFICATIONS


Overview


Models:

2500HD regular cab with 8’ box, 2WD & 4WD
2500HD double cab with 6’6” box, 2WD & 4WD
2500HD double cab with 8’ box, 2WD & 4WD
2500HD crew cab with 6’6” box, 2WD & 4WD
2500HD crew cab with 8’ box, 2WD & 4WD

Body style / driveline:

2-3 passenger regular cab or 5-6 passenger double cab, 5-6-passenger crew cab; 3/4-ton; 2- and 4-wheel-drive heavy-duty pickup

Construction:

body on frame

EPA vehicle class:

full-size truck

Manufacturing location:

Fort Wayne, Ind., and Flint, Mich.

Key competitors:

Ford Super Duty Series pickup, Ram heavy-duty pickup


Engines


 

Vortec 6.0L V-8 (L96 / LC8)

Duramax 6.6L Turbo-Diesel V-8 (LML)

Type:

6.0L V-8

6.6L V-8

Displacement (cu in / cc):

364 / 5967

403 / 6599

Bore & stroke (in / mm):

4.00 x 3.62 / 101.6 x 92

4.05 x 3.89 / 103 x 99

Block material:

cast iron

cast iron

Cylinder head material:

cast aluminum

cast aluminum

Valvetrain:

overhead valve, two valves per cylinder, variable valve timing

overhead valve, four valves per cylinder

Ignition system:

coil-near-plug, platinum- tipped spark plugs, low-resistance spark plug wires

compression, glow plug start aid

Fuel delivery:

sequential fuel injection

direct injection diesel with high pressure common rail

Compression ratio:

9.6:1

16.0:1

Horsepower (hp / kW @ rpm):

360 / 268 @ 5400  (L96 / LC8 w/ gas)*
301 / 225 @ 5000 (LC8 w/ CNG)*

397 / 296 @ 3000

Torque (lb-ft / Nm @ rpm) :

380 / 515 @ 4200 (L96 / LC8 w/ gas)
333 / 452 @ 4200 (LC8 w/ CNG)*

765 / 1037 @ 1600

Recommended fuel:

regular unleaded (L96)
regular unleaded or CNG (LC8)*

diesel or B20

Maximum engine speed (rpm):

6000

3450 (powered)
4800 (braking)

Emissions controls:

three-way catalytic converter, positive crankcase ventilation, evaporative collection system

cooled exhaust gas recirculation (EGR), EGR cooling-bypass system, diesel particulate filter system (DPF), selective catalyst reduction (SCR)

*SAE certified.


Transmissions


 

Hydra-Matic 6L90

Allison 1000

Type:

six-speed automatic (with Vortec 6.0L)

six-speed automatic (with Duramax 6.6L)

Gear ratios (:1):

 

 

First:

4.03

3.10

Second:

2.36

1.81

Third:

1.53

1.41

Fourth:

1.15

1.00

Fifth:

0.85

0.71

Sixth:

0.67

0.61

Reverse:

3.06

4.49

Final drive ratio:

4.10 or 3.73

3.73


Chassis / Suspension


Front:

long- and short-arm independent front torsion bar suspension

Rear:

semi-elliptic two-stage multileaf spring

Steering type:

integral power-assisted recirculating ball

Steering ratio:

16.1

Steering wheel turns, lock-to-lock:

3.57


Turning Circle


 

Regular Cab

Double Cab

Crew Cab

Turning circle, curb-to-curb (ft / m):

6’6” box: N/A
8’ box: 45.9 / 14

6’6” box: 49.2 / 15
8’ box: 53.1 / 16.2

6’6” box: 51.5 / 15.7
8’ box: 56.1 / 17.1


Brakes


Type:

power-assisted, Hydroboost brake-apply system, four-wheel disc, four-wheel ABS

Rotor diameter x thickness  (in / mm):

front: 13.98 x 1.57 / 350 x 40
rear: 14.17 x 1.34 / 360 x 34

Total swept area (sq in / sq cm):

front: 277.6 / 1791
rear: 282 / 1819


Wheels / Tires                       


Wheel size and type:

17 x 7.5-in steel
17 x 7.5-in chrome-clad steel
17 x 7.5-in machined aluminum
18 x 8.0-in steel
18 x 8.0-in polished aluminum
20 x 8.5-in polished aluminum

Tire size:

LT245/75R17 all season blackwall
LT265/70R17 all terrain blackwall
LT265/70R18 all season blackwall
LT265/70R18 all terrain blackwall
LT265/60R20 all terrain blackwall

Dimensions


Exterior 


 

Regular Cab
8’ Box

Double Cab 6’6” Box

Double Cab
8’ Box

Crew Cab
6’6” Box

Crew Cab   
8’ Box

Wheelbase    
(in / mm):

133.6 / 3393

144.2 / 3662

158.1 / 4017

153.7 / 3904

167.7 / 4258

Overall length
(in / mm):

224.3 / 5699

239.9 / 5841

248.8 / 6321

239.4 / 6083

258.3 / 6563

Overall width  
(in / mm):

80.1 / 2035

80.5 / 2045

80.5 / 2045

80.5 / 2045

80.5 / 2045

Overall height – 2WD (in / mm):

77.8 / 1976

78.1 / 1984

77.9 / 1978

78.3 / 1988

78 / 1981

Overall height – 4WD (in / mm):

77.7 / 1975

78 / 1983

77.8 / 1977

78.2 / 1987

77.9 / 1980

Track – front
(in / mm):

68.8 / 1748

68.8 / 1748

68.8 / 1748

68.8 / 1748

68.8 / 1748

Track – rear
(in / mm):

67.3 / 1709

67.3 / 1709

67.3 / 1709

67.3 / 1709

67.3 / 1709

Min. ground clearance – 2WD
(in / mm):

front: 9.8 / 249
rear: 9.1 / 231

front: 9.8 / 249
rear: 8.6 / 218

front: 9.8 / 249
rear: 8.5 / 216

front: 9.8 / 249
rear: 8.4 / 213

front: 9.8 / 249
rear: 8.3 / 211

Min. ground clearance – 4WD
(in / mm):

front: 9.75 / 248
rear: 9.1 / 231

front: 9.75 / 248
rear: 8.5 / 216

front: 9.75 / 248
rear: 8.4 / 214

front: 9.75 / 248
rear: 8.2 / 208

front: 9.75 / 248
rear: 8.2 / 208

Step-in height (in / mm):

26.3 / 668

26.2 / 665

26 / 662

26 / 661

25.9 / 658


Cargo box



 


 6’ 6” box

8’ box

Cargo volume (cu ft / L):

61 / 1728

76.3 / 2162

Length at floor (in / mm):

78.9 / 2003

97.8 / 2483

Width at floor (in / mm):

64.9 / 1642

64.6 / 1642

Width between wheelhousings (in / mm):

51 / 1296

51 / 1296

Tailgate width (in / mm):

62.2 / 1579

62.2 / 1579

Inside height (in / mm):

21.1 / 536

21.1 / 536


Interior


 

Regular Cab


Double Cab


Crew Cab

Headroom (in / mm):

42.8 / 1087

front: 42.8 / 1087
rear: 38.7 / 982

front: 42.8 / 1087
rear: 40.5 / 1029

Legroom (in / mm):

45.3 / 1150

front: 45.2 / 1150
rear: 34.6 / 880

front: 45.3 / 1150
rear: 40.9 / 1040

Shoulder room (in / mm):

66 / 1677

front: 64.8 / 1647
rear: 64.3 / 1634

front: 64.8 / 1647
rear: 64.3 / 1634

Hip room (in / mm):

60.7 / 1543

front: 60.7 / 1543
rear: 60.2 / 1530

front: 60.7 / 1543
rear: 60.2 / 1530


Capacities


 

Regular Cab


Double Cab


Crew Cab

Seating:

2 / 3

5 / 6

5 / 6

Fuel tank – 2WD and 4WD
 (gal / L):

36 / 136

36 / 136

36 / 136

Engine oil (qt / L):

6.0L: 6.0 / 5.7
6.6L: 10 / 9.5

6.0L: 6.0 / 5.7
6.6L: 10 / 9.5

6.0L: 6.0 / 5.7
6.6L: 10 / 9.5

Cooling system (qt / L):

6.0L: 16.4 / 15.5
6.6L: 25.4 / 24

6.0L: 16.4 / 15.5
6.6L: 25.4 / 24

6.0L: 16.4 / 15.5
6.6L: 25.4 / 24


Weight and payload (maximum ratings)


 

GVWR (lb / kg)

Base Curb Weight
(lb / kg)

Payload (lb / kg)

Regular cab, 8’ box (2WD):

6.0L: 10000 / 4536*
6.6L: 9900 / 4491

6.0L: 5909 / 2680*
6.6L: 6576 / 2983

6.0L: 4306 / 1953*
6.6L: 3501 / 1588

Regular cab, 8’ box (4WD):

6.0L: 9500 / 4309
6.6L: 9900 / 4491

6.0L: 6044 / 2741
6.6L: 6903 / 3131

6.0L: 3633 / 1648
6.6L: 3174 / 1440

Double cab, 6’ 6” box (2WD):

6.0L: 9500 / 4309
6.6L: 10000 / 4536

6.0L: 6062 / 2749
6.6L: 6921 / 3139

6.0L: 3671 / 1665
6.6L: 3312 / 1502

Double cab, 6’ 6” box (4WD):

6.0L: 9500 / 4309
6.6L: 10000 / 4536

6.0L: 6354 / 2882
6.6L: 7213 / 3271

6.0L: 3379 / 1533
6.6L: 3020 / 1370

Double cab, 8’ box (2WD):

6.0L: 9500 / 4309
6.6L: 10000 / 4536

6.0L: 6174 / 2800
6.6L: 7033 / 3190

6.0L: 3559 / 1614
6.6L: 3200 / 1451

Double cab, 8’ box (4WD):

6.0L: 9500 / 4309
6.6L: 10000 / 4536

6.0L: 6459 / 2929
6.6L: 7318 / 3319

6.0L: 3274 / 1485
6.6L: 2915 / 1322

Crew cab, 6’ 6” box (2WD):

6.0L: 9500 / 4309
6.6L: 10000 / 4536

6.0L: 6236 / 2828
6.6L: 7095 / 3218

6.0L: 3441 / 1561
6.6L: 3082 / 1398

Crew cab, 6’ 6” (4WD):

6.0L: 9500 / 4309
6.6L: 10000 / 4536

6.0L: 6525 / 2959
6.6L: 7384 / 3349

6.0L: 3152 / 1430
6.6L: 2793 / 1267

Crew cab, 8’ box (2WD):

6.0L: 9500 / 4309
6.6L: 10000 / 4536

6.0L: 6337 / 2874
6.6L: 7196 / 3264

6.0L: 3340 / 1515
6.6L: 2981 / 1352

Crew cab, 8’ box (4WD):

6.0L: 9900 / 4491
6.6L: 10000 / 4536

6.0L: 6689 / 3034
6.6L: 7549 / 3424

6.0L: 3388 / 1537
6.6L: 2628 / 1192

*with UB7 Performance Package


Trailering (maximum ratings)


 

Trailer towing maximum with ball hitch (lb / kg)

Trailer towing maximum with fifth-wheel or gooseneck hitch (lb / kg)

Regular cab / 8’ box:

2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

2WD w/ 6.0L (4.10 axle): 14800 / 6713
2WD w/ 6.6L (3.73 axle): 17900 / 8119
4WD w/ 6.0L (4.10 axle): 14500 / 6577
4WD w/ 6.6L (3.73 axle): 17600 / 7983

Double cab / 6’ 6” box:

2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

2WD w/ 6.0L (4.10 axle): 14500 / 6577
2WD w/ 6.6L (3.73 axle): 17600 / 7983
4WD w/ 6.0L (4.10 axle): 14200 / 6441
4WD w/ 6.6L (3.73 axle): 17300 / 7847

Double cab / 8’ box:

2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

2WD w/ 6.0L (4.10 axle): 14400 / 6532
2WD w/ 6.6L (3.73 axle): 17500 / 7938
4WD w/ 6.0L (4.10 axle): 14100 / 6396
4WD w/ 6.6L (3.73 axle): 17200 / 7802

Crew cab / 6’ 6” box:

2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

2WD w/ 6.0L (4.10 axle): 14300 / 6486
2WD w/ 6.6L (3.73 axle): 17400 / 7893
4WD w/ 6.0L (4.10 axle): 14000 / 6350
4WD w/ 6.6L (3.73 axle): 17100 / 7756

Crew cab / 8’ box:

2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 14500 / 6577

2WD w/ 6.0L (4.10 axle): 14200 / 6441
2WD w/ 6.6L (3.73 axle): 17300 / 7847
4WD w/ 6.0L (4.10 axle): 13800 / 6260
4WD w/ 6.6L (3.73 axle): 16400 / 7439

Note: Information shown is current at time of publication. See media.gm.com for updates.



2015 GMC SIERRA 3500HD SPECIFICATIONS


Overview


Models:

3500HD regular cab with 8’ box,  2WD & 4WD
3500HD double cab with 8’ box, 2WD & 4WD
3500HD crew cab with 6’ 6” box, 2WD & 4WD
3500HD crew cab with 8’ box, 2WD & 4WD

Body style / driveline:

2-3 passenger regular cab or 5-6 passenger extended cab, 5-6-passenger crew cab 1-ton; 2- and 4-wheel-drive heavy-duty pickup

Construction:

body on frame

EPA vehicle class:

full-size truck

Manufacturing location:

Flint, Mich., Ft. Wayne, Ind.

Key competitors:

Ford Super Duty Series pickup, Ram heavy-duty pickup


Engines


 

Vortec 6.0L V-8 (L96 / LC8)

Duramax 6.6L Turbo-Diesel V-8 (LML)

Type:

6.0L V-8

6.6L V-8

Displacement (cu in / cc):

364 / 5967

403 / 6599

Bore & stroke (in / mm):

4.00 x 3.62 / 101.6 x 92

4.05 x 3.89 / 103 x 99

Block material:

cast iron

cast iron

Cylinder head material:

cast aluminum

cast aluminum

Valvetrain:

overhead valve, two valves per cylinder, variable valve timing

overhead valve, four valves per cylinder

Ignition system:

coil-near-plug, platinum- tipped spark plugs, low-resistance spark plug wires

compression, glow plug start aid

Fuel delivery:

sequential fuel injection

direct injection diesel with high pressure common rail

Compression ratio:

9.6:1

16.0:1

Horsepower (hp / kW @ rpm):

360 / 268 @ 5400  (L96 / LC8 w/ gas)*
301 / 225 @ 5000 (LC8 w/ CNG)*

397 / 296 @ 3000

Torque (lb-ft / Nm @ rpm) :

380 / 515 @ 4200 (L96 / LC8 w/ gas)
333 / 452 @ 4200 (LC8 w/ CNG)*

765 / 1037 @ 1600

Recommended fuel:

regular unleaded (L96)
regular unleaded or CNG (LC8)*

diesel or B20

Maximum engine speed (rpm):

6000

3450 (powered)
4800 (braking)

Emissions controls:

three-way catalytic converter, positive crankcase ventilation, evaporative collection system

cooled exhaust gas recirculation (EGR), EGR cooling-bypass system, diesel particulate filter system (DPF), selective catalyst reduction (SCR)

*SAE certified.


Transmissions


 

Hydra-Matic 6L90

Allison 1000

Type:

six-speed automatic (with 6.0L)

six-speed automatic (with Duramax 6.6L)

Gear ratios (:1):

 

 

First:

4.03

3.10

Second:

2.36

1.81

Third:

1.53

1.41

Fourth:

1.15

1.00

Fifth:

0.85

0.71

Sixth:

0.67

0.61

Reverse:

3.06

4.49

Final drive ratio:

4.10 or 3.73

3.73


Chassis / Suspension


Front:

long- and short-arm independent front torsion bar suspension

Rear:

semi-elliptic three-stage multi-leaf spring

Steering type:

integral power-assisted recirculating ball

Steering ratio:

16:1

Steering wheel turns, lock-to-lock:

3.57

Turning Circle

 

Regular Cab  
8’ Box

Double Cab
8’ box

Crew Cab  
6’ 6” Box

Crew Cab 
8’ Box

Turning circle, curb-to-curb (ft / m):

SRW: 45.9 / 14
DRW: 45.9 / 14

SRW: 53.1 / 16.2
DRW: 52.8 / 16.1

SRW: 51.8 / 15.8
DRW: N/A

SRW: 56.1 / 17.1
DRW: 55.7 / 17


Brakes


Type:

power-assisted, Hydroboost brake-apply system, four-wheel disc, four-wheel ABS

Rotor diameter x thickness  (in / mm):

front: 13.98 x 1.57 / 355 x 40
rear (w/ SRW): 14.7 x 1.34 / 373 x 34
rear (w/ DRW): 13.98 x 1.57 / 355 x 40

Total swept area (sq in / sq cm):

front: 277.6 / 1791
rear (w/ SRW): 282 / 1819
rear (w/ DRW): 277.6 / 1791


Wheels / Tires


Wheel size and type:

17-in steel
17-in forged polished aluminum
18-in steel
18-in forged polished aluminum

Tire size:

LT235/80R17 all-season blackwall
LT235/80R17 all-terrain blackwall
LT265/70R18 all-season blackwall
LT265/70R18 all-terrain blackwall


Dimensions



Exterior          


 

Regular Cab
8’ Box

Double Cab
8’ Box

Crew Cab
6’ 6” Box

Crew Cab
8’ Box

Wheelbase (in / mm):

133.6 / 3393

158.1 / 4017

153.7 / 3904

167.6 / 4259

Overall length  (in / mm):

224.3 / 5699

248.8 / 6321

239.4 / 6083

258.3 / 6563

Overall width (in / mm):

80.1 / 2035 – SRW
96 / 2438 – DRW 

80.5 / 2045 – SRW
96 / 2438 – DRW 

80.5 / 2045 – SRW
N/A – DRW 

80.5 / 2045 – SRW
96 / 2438 – DRW 

Overall height – 2WD
(in / mm):

77.8 / 1977 – SRW
77.3 / 1965 – DRW

78 / 1981 – SRW
77.6 / 1972 – DRW

78.3 / 1990 – SRW
N/A – DRW

77.9 / 1979 – SRW
77.8 / 1976 – DRW

Overall height – 4WD
(in / mm):

77.9 / 1979 – SRW
77.4 / 1967 – DRW

77.9 / 1980 – SRW
77.6 / 1972 – DRW

78.1 / 1985 – SRW
N/A – DRW

78.1 / 1983 – SRW
77.7 / 1975 – DRW

Track – front (in / mm):

68.8 / 1748

68.8 / 1748

68.8 / 1748

68.8 / 1748

Track – rear w/single rear wheels (in / mm):

67.3 / 1709

67.3 / 1709

67.3 / 1709

67.3 / 1709

Track – rear w/dual rear wheels (in / mm):

75 / 1906

75 / 1906

75 / 1906

75 / 1906

Min. ground clearance – 2WD w/ SRW (in / mm):

front: 10 / 255
rear: 8.6 / 229

front: 10 / 256
rear: 8.7 / 221

front: 10 / 256
rear: 8.6 / 218

front: 10 / 255
rear: 8.3 / 214

Min. ground clearance – 2WD w/ DRW (in / mm):

front: 9.9 / 252
rear: 8.0 / 204

front: 9.9 / 253
rear: 8.4 / 213

N / A

front: 10 / 254
rear: 8.2 / 210

Min. ground clearance – 4WD w/ SRW (in / mm):

front: 9.9 / 252
rear: 8.6 / 220

front: 10 / 255
rear: 8.7 / 223

front: 9.9 / 252
rear: 8.4 / 214

front: 10 / 256
rear: 8.6 / 218

Min. ground clearance – 4WD w/ DRW (in / mm):

front: 9.8 / 250
rear: 8.0 / 205

front: 9.9 / 252
rear: 8.4 / 215

N / A

front: 9.9 / 253
rear: 8.2 / 210

Step-in height (in / mm):

26 / 660

25.8 / 655

25.2 / 642

25.4 / 647


Cargo box


 

 6’ 6” box

8’ box

Cargo volume (cu ft / L):

61 / 1728

76.3 / 2162

Length at floor (in / mm):

78.9 / 2003

97.8 / 2483

Width at floor (in / mm):

64.9 / 1642

64.6 / 1642

Width between wheelhousings (in / mm):

51 / 1296

51 / 1296

Tailgate width (in / mm):

62.2 / 1579

62.2 / 1579

Inside height (in / mm):

21.1 / 536

21.1 / 536


Interior


 

Regular Cab


Double Cab


Crew Cab

Headroom (in / mm):

42.8 / 1087

front: 42.8 / 1087
rear: 38.7 / 982

front: 42.8 / 1087
rear: 40.5 / 1029

Legroom (in / mm):

45.3 / 1150

front: 45.2 / 1150
rear: 34.6 / 880

front: 45.3 / 1150
rear: 40.9 / 1040

Shoulder room (in / mm):

66 / 1677

front: 64.8 / 1647
rear: 64.3 / 1634

front: 64.8 / 1647
rear: 64.3 / 1634

Hip room (in / mm):

60.7 / 1543

front: 60.7 / 1543
rear: 60.2 / 1530

front: 60.7 / 1543
rear: 60.2 / 1530


Capacities


 

Regular Cab


Double Cab


Crew Cab

Seating:

2 / 3

5 / 6

5 / 6

Fuel tank (gal / L):

36 / 136

36 / 136

36 / 136

Engine oil (qt / L):

6.0L: 6.0 / 5.7
6.6L: 10 / 9.5

6.0L: 6.0 / 5.7
6.6L: 10 / 9.5

6.0L: 6.0 / 5.7
6.6L: 10 / 9.5

Cooling system (qt / L):

6.0L: 16.4 / 15.5
6.6L: 25.4 / 24

6.0L: 16.4 / 15.5
6.6L: 25.4 / 24

6.0L: 16.4 / 15.5
6.6L: 25.4 / 24

Weight and payload (maximum ratings)

 

GVWR (lb / kg)

Curb Weight (lb / kg)

Payload (lb / kg)

Reg cab, 8’ box (2WD) with single rear wheels:

6.0L: 10400 / 4717
6.6L: N/A

6.0L: 5958 / 2702
6.6L: N/A

6.0L: 4682 / 2124
6.6L: N/A

Reg cab, 8’ box (2WD) with dual rear wheels:

6.0L: 13500 / 6123
6.6L: N/A

6.0L: 6295 / 2855
6.6L: N/A

6.0L: 7374 / 3345
6.6L: N/A

Reg cab, 8’ box (4WD) with single rear wheels:

6.0L: 10700 / 4853
6.6L: 11400 / 5171

6.0L: 6281 / 2849
6.6L: 7041 / 3193

6.0L: 4660 / 2114
6.6L: 4600 / 2087

Reg cab, 8’ box (4WD) with dual rear wheels:

6.0L: 13400 / 6078
6.6L: 13025 / 5908

6.0L: 6617 / 3001
6.6L: 7377 / 3346

6.0L: 6952 / 3153
6.6L: 5817 / 2639

Double cab, 8’ box (2WD) with single rear wheels:

6.0L: 10700 / 4853
6.6L: 11200 / 5080

6.0L: 6404 / 2904
6.6L: 7164 / 3249

6.0L: 4593 / 2083
6.6L: 4333 / 1965

Double cab, 8’ box (2WD) with dual rear wheels:

6.0L: 13025 / 5908
6.6L: 13025 / 5908

6.0L: 6737 / 3055
6.6L: 7497 / 3400

6.0L: 6450 / 2926
6.6L: 5690 / 2581

Double cab, 8’ box (4WD) with single rear wheels:

6.0L: 11000 / 4990
6.6L: 11600 / 5262

6.0L: 6680 / 3030
6.6L: 7440 / 3374

6.0L: 4617 / 2094
6.6L: 4457 / 2022

Double cab, 8’ box (4WD) with dual rear wheels:

6.0L: 13025 / 5908
6.6L: 13025 / 5908

6.0L: 7017 / 3183
6.6L: 7777 / 3527

6.0L: 6170 / 2799
6.6L: 5410 / 2454

Crew cab, 6’6” box (2WD) with single rear wheels:

6.0L: 10500 / 4763
6.6L: 11100 / 5035

6.0L: 6427 / 2915
6.6L: 7187 / 3260

6.0L: 4319 / 1959
6.6L: 4159 / 1886

Crew cab, 6’6” box (4WD) with single rear wheels:

6.0L: 10800 / 4899
6.6L: 11500 / 5216

6.0L: 6695 / 3037
6.6L: 7455 / 3381

6.0L: 4324 / 1961
6.6L: 4264 / 1934

Crew cab, 8’ box (2WD) with single rear wheels:

6.0L: 10700 / 4853
6.6L: 11400 / 5171

6.0L: 6554 / 2973
6.6L: 7314 / 3317

6.0L: 4387 / 1990
6.6L: 4327 / 1963

Crew cab, 8’ box (2WD) with dual rear wheels:

6.0L: 13025 / 5908
6.6L: 13025 / 5908

6.0L: 6886 / 3123
6.6L: 7646 / 3468

6.0L: 6308 / 2861
6.6L: 5548 / 2517

Crew cab, 8’ box (4WD) with single rear wheels:

6.0L: 11000 / 4990
6.6L: 11600 / 5262

6.0L: 6892 / 3126
6.6L: 7652 / 3481

6.0L: 4348 / 1972
6.6L: 4188 / 1900

Crew cab, 8’ box (4WD) with dual rear wheels:

6.0L: 13025 / 5908
6.6L: 13025 / 5908

6.0L: 7229 / 3279
6.6L: 7989 / 3623

6.0L: 5965 / 2706
6.6L: 5205 / 2361

Trailering (maximum ratings)

 

Trailer towing maximum with ball hitch (lb / kg)

Trailer towing maximum with fifth-wheel or gooseneck hitch (lb / kg)

Regular cab, 8’ box with single rear wheels:

2WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

2WD w/ 6.0L (4.10 axle): 14600 / 6622
4WD w/ 6.0L (4.10 axle): 14300 / 6486
4WD w/ 6.6L (3.73 axle): 17500 / 7938

Regular cab, 8’ box with
dual rear wheels:

2WD w/ 6.0L (4.10 axle): 14200 / 6441
4WD w/ 6.0L (4.10 axle): 13900 / 6305
4WD w/ 6.6L (3.73 axle): 16000 / 7257

2WD w/ 6.0L (4.10 axle): 14200 / 6441
4WD w/ 6.0L (4.10 axle): 13900 / 6305
4WD w/ 6.6L (3.73 axle): 23200 / 10523

Double cab, 8’ box with single rear wheels:

2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

2WD w/ 6.0L (4.10 axle): 14200 / 6441
2WD w/ 6.6L (3.73 axle): 17500 / 7938
4WD w/ 6.0L (4.10 axle): 13900 / 6305
4WD w/ 6.6L (3.73 axle): 17200 / 7802

Double cab, 8’ box with dual rear wheels:

2WD w/ 6.0L (4.10 axle): 13800 / 6260
2WD w/ 6.6L (3.73 axle): 16500 / 7484
4WD w/ 6.0L (3.73 axle): 13500 / 6123
4WD w/ 6.6L (3.73 axle): 18000 / 8165

2WD w/ 6.0L (4.10 axle): 13800 / 6260
2WD w/ 6.6L (3.73 axle): 23000 / 10433
4WD w/ 6.0L (3.73 axle): 13500 / 6123
4WD w/ 6.6L (3.73 axle): 22800 / 10342

Crew cab, 6’ 6” box with single rear wheels:

2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 13000 / 5897

2WD w/ 6.0L (4.10 axle): 14100 / 6396
2WD w/ 6.6L (3.73 axle): 17400 / 7893
4WD w/ 6.0L (4.10 axle): 13900 / 6305
4WD w/ 6.6L (3.73 axle): 17100 / 7756

Crew cab, 8’ box with single rear wheels:

2WD w/ 6.0L (4.10 axle): 13000 / 5897
2WD w/ 6.6L (3.73 axle): 13000 / 5897
4WD w/ 6.0L (4.10 axle): 13000 / 5897
4WD w/ 6.6L (3.73 axle): 15000 / 6804

2WD w/ 6.0L (4.10 axle): 14000 / 6350
2WD w/ 6.6L (3.73 axle): 17300 / 7847
4WD w/ 6.0L (4.10 axle): 13700 / 6214
4WD w/ 6.6L (3.73 axle): 16900 / 7665

Crew cab, 8’ box with
dual rear wheels:

2WD w/ 6.0L (4.10 axle): 13700 / 6214
2WD w/ 6.6L (3.73 axle): 16500 / 7484
4WD w/ 6.0L (4.10 axle): 13300 / 6033
4WD w/ 6.6L (3.73 axle): 19600 / 8890

2WD w/ 6.0L (4.10 axle): 13700 / 6214
2WD w/ 6.6L (3.73 axle): 22900 / 10387
4WD w/ 6.0L (4.10 axle): 13300 / 6033
4WD w/ 6.6L (3.73 axle): 22600 / 10251

Note: Information shown is current at time of publication. Visit media.gm.com for updates.


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