GMC Sierra 1500 HD vs GMC Sierra 2500 HD
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2026 GMC Sierra 2500 HD
Overview
| Spec | GMC Sierra 1500 HDSLE1 | GMC Sierra 2500 HDPro |
|---|---|---|
| Selected trim | SLE1 | Pro |
| Body style | Truck (Crew Cab) | Truck (Regular Cab) |
| Drivetrain | rear wheel drive | rear wheel drive |
| Fuel type | regular unleaded | regular unleaded |
| Transmission | 4-speed automatic | 10-speed shiftable automatic |
| Engine type | gas | gas |
| Model year | 2006 | 2026 |
Pricing & market
| Spec | GMC Sierra 1500 HDSLE1 | GMC Sierra 2500 HDPro |
|---|---|---|
| MSRP | $29,745 (best) | $46,700 |
| For sale now | 0 | 0 |
Fuel economy & range
| Spec | GMC Sierra 1500 HDSLE1 | GMC Sierra 2500 HDPro |
|---|---|---|
| Combined MPG | 15 MPG (best) | — |
| City MPG | 13 MPG (best) | — |
| Highway MPG | 18 MPG (best) | — |
| Fuel tank | 26 gal | 36 gal (best) |
Performance
| Spec | GMC Sierra 1500 HDSLE1 | GMC Sierra 2500 HDPro |
|---|---|---|
| Horsepower | 300 hp | 401 hp (best) |
| Torque | 360 lb-ft | 464 lb-ft (best) |
| Engine size | 6 L | 6.6 L (best) |
| Cylinders | V8 | V8 |
Size & capability
| Spec | GMC Sierra 1500 HDSLE1 | GMC Sierra 2500 HDPro |
|---|---|---|
| Seating | 6 seats (best) | 3 seats |
| Doors | 4 (best) | 2 |
| Towing capacity | 10,200 lbs | 14,500 lbs (best) |
| Payload | 3,129 lbs | 3,689 lbs (best) |
| Curb weight | 5,471 lbs (best) | 6,267 lbs |
| Ground clearance | 7.4 in | 10.2 in (best) |
| Wheelbase | 153 in (best) | 142 in |
| Length | 239.7 in (best) | 236.3 in |
| Width | 79.7 in | 81.8 in (best) |
| Height | 77 in | 79.9 in (best) |
Safety & recalls
| Spec | GMC Sierra 1500 HDSLE1 | GMC Sierra 2500 HDPro |
|---|---|---|
| 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 1500 HD | GMC Sierra 2500 HD |
|---|---|---|
| 1 | SLE1 $29,745 MSRP(Currently comparing) | Pro $46,700 MSRP(Currently comparing) |
| 2 | SLE1 $33,115 MSRP | Pro $48,600 MSRP |
| 3 | SLE2 $31,405 MSRP | Pro $48,800 MSRP |
| 4 | SLE2 $34,640 MSRP | Pro $50,400 MSRP |
| 5 | SLT $33,330 MSRP | Pro $50,600 MSRP |
| 6 | SLT $36,525 MSRP | 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 1500 HD vs GMC Sierra 2500 HD FAQ
- Which is better: 2006 GMC Sierra 1500 HD or 2026 GMC Sierra 2500 HD?
- It depends on priorities. OpenDealer compares 2006 GMC Sierra 1500 HD vs 2026 GMC Sierra 2500 HD on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2006 GMC Sierra 1500 HD or 2026 GMC Sierra 2500 HD?
- Based on starting MSRP, the 2006 GMC Sierra 1500 HD starts lower at $29,745.
- Which has better startingMsrp: 2006 GMC Sierra 1500 HD or 2026 GMC Sierra 2500 HD?
- The 2006 GMC Sierra 1500 HD leads on startingMsrp in this comparison (29,745).
- Which has better combinedMpg: 2006 GMC Sierra 1500 HD or 2026 GMC Sierra 2500 HD?
- The 2006 GMC Sierra 1500 HD leads on combinedMpg in this comparison (15).
- Which has better horsepower: 2006 GMC Sierra 1500 HD or 2026 GMC Sierra 2500 HD?
- The 2026 GMC Sierra 2500 HD leads on horsepower in this comparison (470).
- Which has better maxTowingLbs: 2006 GMC Sierra 1500 HD or 2026 GMC Sierra 2500 HD?
- The 2026 GMC Sierra 2500 HD leads on maxTowingLbs in this comparison (20,000).