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Old 03-05-2015, 11:10 PM   #3
dietz4ibanez
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Proven powertrains

A Vortec 6.0L gas V-8 with variable valve timing is matched with the Hydra-Matic 6L90 six-speed automatic transmission as the standard powertrain across the Sierra HD model range. This combination is engineered to deliver excellent performance and efficiency, especially at low-rpms. It is rated at 360 horsepower (268 kW) and 380 lb-ft of torque (515 Nm) in 2500HD models and 322 horsepower (240 kW) and 380 lb-ft (515 Nm) in 3500HD.

The 6.0L engine is also available in a bi-fuel model that features special hardened valves and valve seats that enables it to run on compressed natural gas or gasoline. The CNG fuel system is installed by a GM supplier and completed vehicles are delivered directly to the customer, making the purchase process as seamless as ordering any other option.

The Duramax 6.6L diesel and Allison 1000 six-speed automatic transmission powertrain combination is available on all 2500HD and 3500HD models, with highlights that include:
397 horsepower (296 kW) at 3,000 rpm
765 lb-ft of torque (1,037 Nm) at 1,600 rpm
High-pressure (30,000 psi/2,000 bar) Piezo-actuated fuel system for greater fuel efficiency, improved performance and reduced emissions
Variable vane turbocharger that also acts as an exhaust brake to help control or slow the vehicle’s speed
Selective catalytic reduction after-treatment system using diesel exhaust fluid injection to provide the best overall diesel characteristics and performance – with a range of about 5,000 miles (8,000 km) between DEF refills
Combustion and after-treatment optimized to provide about 700 miles (1,125 km) between diesel particulate filter regenerations
B20 biodiesel capability for an alternative fueling option.

The Allison 1000 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.

PRELIMINARYSPECIFICATIONS

Overview
Models:
GMC Sierra 2500HD and 2500HD Denali; 3500HD and 3500HD Denali
Construction:
body on frame
Manufacturing locations:
Fort Wayne, Ind., and Flint, Mich.

Powertrains

6.0L VVT V-8 – gas/E85 or bi-fuel
Duramax 6.6L turbo-diesel
Engine type:
OHV gasoline or bi-fuel V-8 with variable valve timing
OHV turbo-diesel with Piezo-actuated fuel system and variable-vane turbo
Horsepower (hp / kW @ rpm):
360 / 268 @ 5400 (2500HD)
322 / 240 @ 4400 (3500HD)
397 / 296 @ 3000
Torque (lb-ft / Nm @ rpm):
380 / 515 @ 4200 (2500HD & 3500 HD)
765 / 1037 @ 1600
Transmission:
Hydra-Matic 6L90 6-speed auto.
Allison 1000 6-speed auto.
Final drive ratio:
4.10 or 3.73
3.73

Chassis / Suspension & Brakes
Front:
long- and short-arm independent front torsion bar suspension
Rear:
semi-elliptic two-stage multi-leaf spring
Steering type:
integral power-assisted recirculating ball
Brakes:
power-assisted brake-apply, four-wheel disc, four-wheel ABS
Wheel and tire size:
17 x 7.5-in. / LT245/75R17 or LT265/70R17
18 x 8.0-in. / LT265/70R18
20 x 8.5-in. / LT265/60R20

Exterior (2500HD)

Regular Cab
Long Box
Double Cab Standard Box
Double Cab
Long Box
Crew Cab Standard Box
Crew Cab Long Box
Wheelbase (in / mm):
133.5 / 3393
144.1 / 3662
158.1 / 4017
153.7 / 3904
167.6 / 4259
Overall length (in / mm):
224.3 / 5699
230 / 5841
248.8 / 6321
239.5 / 6083
258.4 / 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
78.3 / 1987
79.9 / 1980

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

Capacities

2500HD
3500HD
Max payload (lb / kg):
4306 / 1953
7374 / 3508
Max conventional trailing (lb / kg):
14500 / 6577
19600 / 8890
Max 5th wheel trailering (lb / kg):
17900 / 8119
23200 / 10523
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