GMC Sierra 2500 HD vs HUMMER H3T
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2010 HUMMER H3T
Overview
| Spec | GMC Sierra 2500 HDPro | HUMMER H3TBase |
|---|---|---|
| Selected trim | Pro | Base |
| Body style | Truck (Regular Cab) | Truck (Crew Cab) |
| Drivetrain | rear wheel drive | four wheel drive |
| Fuel type | regular unleaded | regular unleaded |
| Transmission | 10-speed shiftable automatic | 5-speed manual |
| Engine type | gas | gas |
| Model year | 2026 | 2010 |
Pricing & market
| Spec | GMC Sierra 2500 HDPro | HUMMER H3TBase |
|---|---|---|
| MSRP | $46,700 | $30,915 (best) |
| For sale now | 0 | 0 |
Fuel economy & range
| Spec | GMC Sierra 2500 HDPro | HUMMER H3TBase |
|---|---|---|
| Combined MPG | — | 15 MPG (best) |
| City MPG | — | 14 MPG (best) |
| Highway MPG | — | 18 MPG (best) |
| Fuel tank | 36 gal (best) | 27 gal |
Performance
| Spec | GMC Sierra 2500 HDPro | HUMMER H3TBase |
|---|---|---|
| Horsepower | 401 hp (best) | 239 hp |
| Torque | 464 lb-ft (best) | 241 lb-ft |
| Engine size | 6.6 L (best) | 3.7 L |
| Cylinders | V8 | I5 |
Size & capability
| Spec | GMC Sierra 2500 HDPro | HUMMER H3TBase |
|---|---|---|
| Seating | 3 seats | 5 seats (best) |
| Doors | 2 | 4 (best) |
| Cargo volume | — | 33.5 cu ft (best) |
| Towing capacity | 14,500 lbs (best) | 4,400 lbs |
| Payload | 3,689 lbs (best) | 1,090 lbs |
| Curb weight | 6,267 lbs | 4,911 lbs (best) |
| Ground clearance | 10.2 in (best) | 9.5 in |
| Wheelbase | 142 in (best) | 134.2 in |
| Length | 236.3 in (best) | 212.7 in |
| Width | 81.8 in (best) | 75 in |
| Height | 79.9 in (best) | 72.1 in |
Safety & recalls
| Spec | GMC Sierra 2500 HDPro | HUMMER H3TBase |
|---|---|---|
| Open recalls (YMM scope) | None reported | None reported |
Highlighted values indicate the better figure for that spec when a clear winner exists. Specs reflect the selected trim for each vehicle. Drag a vehicle header to reorder columns. MSRP and specifications are manufacturer data; listing prices and inventory come from live dealer listings. Safety ratings are from NHTSA.
Trim overview
All available trims with MSRP. The trim selected above is highlighted; comparison specs use that selection.
| Trim | GMC Sierra 2500 HD | HUMMER H3T |
|---|---|---|
| 1 | Pro $46,700 MSRP(Currently comparing) | Base $30,915 MSRP(Currently comparing) |
| 2 | Pro $48,600 MSRP | Alpha $35,680 MSRP |
| 3 | Pro $48,800 MSRP | Alpha $39,205 MSRP |
| 4 | Pro $50,400 MSRP | — |
| 5 | Pro $50,600 MSRP | — |
| 6 | Pro $49,500 MSRP | — |
| 7 | Pro $51,400 MSRP | — |
| 8 | Pro $51,600 MSRP | — |
| 9 | Pro $53,200 MSRP | — |
| 10 | Pro $53,400 MSRP | — |
| 11 | SLE $53,500 MSRP | — |
| 12 | SLE $55,600 MSRP | — |
| 13 | SLE $55,800 MSRP | — |
| 14 | SLE $57,400 MSRP | — |
| 15 | SLE $57,600 MSRP | — |
| 16 | SLT $64,700 MSRP | — |
| 17 | SLT $65,000 MSRP | — |
| 18 | AT4 $71,600 MSRP | — |
| 19 | AT4 $71,800 MSRP | — |
| 20 | Denali $75,000 MSRP | — |
| 21 | Denali $75,200 MSRP | — |
| 22 | AT4X $83,700 MSRP | — |
| 23 | Denali Ultimate $93,800 MSRP | — |
| 24 | Denali Ultimate $94,100 MSRP | — |
GMC Sierra 2500 HD vs HUMMER H3T FAQ
- Which is better: 2026 GMC Sierra 2500 HD or 2010 HUMMER H3T?
- It depends on priorities. OpenDealer compares 2026 GMC Sierra 2500 HD vs 2010 HUMMER H3T on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2026 GMC Sierra 2500 HD or 2010 HUMMER H3T?
- Based on starting MSRP, the 2010 HUMMER H3T starts lower at $30,915.
- Which has better startingMsrp: 2026 GMC Sierra 2500 HD or 2010 HUMMER H3T?
- The 2010 HUMMER H3T leads on startingMsrp in this comparison (30,915).
- Which has better combinedMpg: 2026 GMC Sierra 2500 HD or 2010 HUMMER H3T?
- The 2010 HUMMER H3T leads on combinedMpg in this comparison (15).
- Which has better horsepower: 2026 GMC Sierra 2500 HD or 2010 HUMMER H3T?
- The 2026 GMC Sierra 2500 HD leads on horsepower in this comparison (470).
- Which has better seats: 2026 GMC Sierra 2500 HD or 2010 HUMMER H3T?
- The 2026 GMC Sierra 2500 HD leads on seats in this comparison (6).
- Which has better maxTowingLbs: 2026 GMC Sierra 2500 HD or 2010 HUMMER H3T?
- The 2026 GMC Sierra 2500 HD leads on maxTowingLbs in this comparison (20,000).