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GMC Sierra 2500HD Extended Cab 2008-2013 Photos, engines & full specs

Body style: Truck
Segment: Heavy Duty Pickup
Production years: 2008, 2009, 2010, 2011, 2012, 2013

GMC Sierra 2500HD Extended Cab 2008-2013 19 Photos
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General Motors released the third generation of the Sierra pickup 2500 HD series in 2007 as a 2008 model year and offered it with a choice of three cabins.

It was already common to see the large, heavy-duty pickups used for weekends in the mountains or pulling trailers with boats or motorhomes on the highway. Most of them were crew-cabs, with four doors and a full house inside. The single-cab mainly was a work truck, while the Extended Cab was somewhere in between. It was still good to carry a family to the mountains, as long as it was a family with small children on board. For the 2500 HD (heavy-duty), the American carmaker used a new platform, the T900, which replaced the T800 and offered better solutions and more powerful engines than its predecessor.

Like its predecessor, the Sierra was available in a few body versions, starting with a chassis-cab and going up to the big crew-cab version. Its raked windshield at 57 degrees decreased the wind noise and the aerodynamic resistance, increasing the fuel efficiency. To add a more dynamic appearance, the Sierra featured flared wheel-arches. The Extended Cab version featured two doors for the front passengers and another pair of rear-hinged doors behind them.

Inside, the GMC Sierra offered two or three seating positions, depending on the trim level and options. Like most of the pickups on the market, it provided a big dashboard with a steering-column mounted gear-selector for the automatic transmission. The rear seats were surprisingly good as long as the occupants were not very tall.

GMC offered the Sierra with a choice of two engines paired as standard to a 4-speed automatic gearbox. It was available either as a 2WD or 4WD.

press release
GMC Sierra 2500HD Extended Cab 2008, 2009, 2010, 2011, 2012, 2013
  1 gasoline engine
  • 6.0 V8 6AT (360 HP)
  1 diesel engine
  • 6.6 V8 6AT (365 HP)

GMC Sierra 2500HD Extended Cab
6.0 V8 6AT (360 HP)

ENGINE SPECS - 6.0 V8 6AT (360 HP)
Cylinders:V8
Displacement:5967 cm3
Power:268 KW @ 5400 RPM
365 HP @ 5400 RPM
359 BHP @ 5400 RPM
Torque:380 lb-ft @ 4200 RPM
515 Nm @ 4200 RPM
Fuel System:Multipoint Injection
Fuel:Gasoline
TRANSMISSION SPECS
Drive Type:Front Wheel Drive
Gearbox:6-speed automatic
BRAKES SPECS
Front:Ventilated Discs
Rear:Discs
TIRES SPECS
Tire Size:LT245/75R16
DIMENSIONS
Length:230.3 in (5850 mm)
Width:80 in (2032 mm)
Height:76.3 in (1938 mm)
Front/rear Track:68.6/66 in (1,742/1,676 mm)
Wheelbase:143.5 in (3645 mm)
Ground Clearance:9.5 in (241 mm)
Cargo Volume:60.7 cuFT (1719 L)
Aerodynamics (Cd):0.41
WEIGHT SPECS
Unladen Weight:5577 lbs (2530 kg)
Gross Weight Limit:9200 lbs (4173 kg)
FUEL ECONOMY (NEDC)
Combined:13 mpg US (18.1 L/100Km)
Notes
U.S. Spec

GMC Sierra 2500HD Extended Cab
6.6 V8 6AT (365 HP)

ENGINE SPECS - 6.6 V8 6AT (365 HP)
Cylinders:V8
Displacement:6599 cm3
Power:272 KW @ 3200 RPM
370 HP @ 3200 RPM
365 BHP @ 3200 RPM
Torque:660 lb-ft @ 1600 RPM
895 Nm @ 1600 RPM
Fuel System:Turbocharged Common Rail
Fuel:Diesel
TRANSMISSION SPECS
Drive Type:Rear Wheel Drive
Gearbox:6-speed automatic
BRAKES SPECS
Front:Ventilated Discs
Rear:Discs
TIRES SPECS
Tire Size:LT245/75R16
DIMENSIONS
Length:230.3 in (5850 mm)
Width:80 in (2032 mm)
Height:76.3 in (1938 mm)
Front/rear Track:68.6/66 in (1,742/1,676 mm)
Wheelbase:143.5 in (3645 mm)
Ground Clearance:9.5 in (241 mm)
Cargo Volume:60.7 cuFT (1719 L)
Aerodynamics (Cd):0.41
WEIGHT SPECS
Unladen Weight:6286 lbs (2851 kg)
Gross Weight Limit:9200 lbs (4173 kg)
FUEL ECONOMY (NEDC)
Combined:15 mpg US (15.7 L/100Km)
Notes
U.S. Spec
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