Truck Trend is the source for official specifications, dimensions, and other information that matters to real truck users. Check out the latest info for the 2011 GMC Sierra 2500HD full-size pickup truck. The Sierra 2500HD features a 6.0-liter V-8 mated to a Hydra-Matic six-speed automatic and a 6.6-liter turbodiesel V-8 matched with an Allison six-speed automatic.

2011 GMC Sierra 2500HD Technical Specifications
Models:regular, extended, crew, and Denali crew cab with standard or long box
Body style / driveline:full-size three-quarter-ton heavy-duty pickup truck, 2-door regular cab and 4-door extended and crew cab, front engine, rear / four-wheel drive
EPA vehicle class:full-size truck
Manufacturing location:Flint, Michigan, Fort Wayne, Indiana
Key competitors:Ford Super Duty Series, Ram heavy-duty pickup
 Vortec 6.0L V-8 (L96)Duramax 6.6L Turbodiesel V-8 (LML)
Type:6.0L V-86.6L V-8
Displacement (cu in / cc):364 / 5967403 / 6599
Bore & stroke (in / mm):4.00 x 3.62 / 101.6 x 924.06 x 3.9 / 103 x 99
Block material:cast ironcast iron
Cylinder head material:cast aluminumcast aluminum
Valvetrain:overhead valve, two valves per cylinder, variable valve timingoverhead valve, four valves per cylinder
Ignition system:coil-near-plug, platinum-tipped spark plugs, low-resistance spark plug wirescompression, glow plug start aid
Fuel delivery:sequential fuel injectiondirect injection diesel with high pressure common rail
Compression ratio:9.6:116.0:1
Horsepower (hp / kW @ rpm):360 / 268 @ 5400397 / 296 @ 3000
Torque (lb-ft / Nm @ rpm):380 / 515 @ 4200765 / 1037 @ 1600
Recommended fuel:regular unleadeddiesel or B20
Maximum engine speed (rpm):60004800
Emissions controls:three-way catalytic converter, positive crankcase ventilation, evaporative collection systemcooled exhaust gas recirculation (EGR), EGR cooling-bypass system, diesel particulate filter system (DPF), selective catalyst reduction (SCR)
 Hydra-Matic 6L90Allison 1000
Type:six-speed automatic (with Vortec 6.0L)six-speed automatic (with Duramax 6.6L)
Gear ratios (:1):
Final drive ratio:3.73 or 4.103.73
Chassis / Suspension
Front:all models: std long- and short-arm independent front torsion bar suspension
Rear:semi-elliptic two-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, curb-to-curb (ft / m)
Regular cabExtended cabCrew cab
std. box: 44.9 / 13.7std. box: 47.9 / 14.6std. box: 50.5 / 15.4
long box: N/Along box: 51.8 / 15.8long box: 54.8 / 16.7
Type:power-assisted, Hydroboost brake-apply system, four-wheel disc, four-wheel ABS
Rotor diameter x thickness (in / mm):front: 13.97 x 1.57 / 355 x 40
rear: 14.17 x 1.34 / 360 x 34
Total swept area (sq in / sq cm):front: 277.7 / 1791
rear: 277.5 / 1790
Wheels / Tires
Wheel size and type:17 x 7.5-in steel
17 x 7.5-in aluminum
18 x 8.0-in aluminum
20 x 8.5-in aluminum
Tire size:LT245/75R17 all-season
LT265/70R17 all-terrain
LT265/70R18 all-season
LT265/60R20 all-terrain