Truck Trend is the source for official specifications, payload, towing capacity, and other information that matters to real truck users. Check out the latest info for the 2010 GMC Sierra 2500HD Regular Cab, Extended Cab, and Crew Cab. The Sierra 2500HD is available with either the 360-horsepower Vortec 6.0L V-8 or the 365-horsepower Duramax 6.6L V-8 engine. Both are paired with a six-speed automatic transmission.
| 2010 GMC Sierra 2500HD Technical Specifications |
| Overview |
| Models: | 2500HD reg. cab, long box, 2WD & 4WD
2500HD ext. cab, std. box, 2WD & 4WD
2500HD ext. cab, long box, 2WD & 4WD
2500HD crew cab, long box, 2WD & 4WD |
| Body style / driveline: | 2-3 passenger regular cab or 5-6 passenger extended 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: | Pontiac, Mich.; Flint, Mich. |
| Engines |
| | Vortec 6.0L V-8 (L96) | Duramax 6.6L V-8 (LMM) |
| 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 | 4.06 x 3.9 / 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; low-resistance spark plug wires |
| Fuel delivery: | sequential fuel injection | direct injection diesel with high pressure common rail |
| Compression ratio: | 9.6:1 | 16.8:1 |
| Horsepower (hp / kW @ rpm): | 360 / 268 @ 5400* (up to 10,000 lbs. GVWR)
322 / 240 @ 4400* (more than 10,000 lbs. GVWR) | 365 / 272 @ 3200 |
| Torque (lb-ft / Nm @ rpm): | 380 / 515 @ 4200* | 660 / 895 @ 1600 |
| Recommended fuel: | regular unleaded | diesel |
| Maximum engine speed (rpm): | 6000 | 3450 |
| Emissions controls: | three-way catalytic converter, positive crankcase ventilation, evaporative collection system | turbocharged, intercooled, catalytic converter system; diesel particulate filter system with regeneration |
| Transmissions |
| | Hydra-Matic 6L90 | Allison 1000 |
| Type: | six-speed automatic (w/ Vortec 6.0L) | six-speed automatic (w/ 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: | 3.73 or 4.10 | 3.73 |
| 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: | 24:1 |
| Steering wheel turns, lock-to-lock: | 3.14 |
| Turning Circle |
| | Regular Cab | Extended Cab | Crew Cab |
| Turning circle, curb-to-curb (ft / m) |
| Standard box: | -- | 47.6 / 14.5 (2WD and 4WD) | 51.2 / 15.6 (2WD and 4WD) |
| Long box: | 45.3 / 13.8 (2WD and 4WD) | 52.5 / 16 (2WD and 4WD) | 55.1 / 16.8 (2WD and 4WD) |
| Brakes |
| Type: | power-assisted, Hydroboost brake-apply system, four-wheel disc, four-wheel ABS |
| Rotor diameter x thickness (in / mm): | front: 12.8 x 1.5 / 325 x 38
rear: 12.8 x 1.2 / 325 x 30 |
| Total swept area (sq in / sq cm): | front: 245.5 / 1584
rear: 235.1 / 1517 |
| Wheels / Tires |
| Wheel size and type: | 16-inch x 6.5-inch steel
16-inch x 6.5-inch steel chrome-clad
16-inch x 6.5-inch forged aluminum
17-inch x 7.5-inch aluminum, bright-machined |
| Tire size: | LT245/75R16
LT265/75R17 |