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The GMC Sierra HD is related to the Chevrolet Silverado HD and steers more toward comfort and luxury rather than Chevy’s work-first trucks.
There aren’t many differentiators between the two, other than the GMC Denali version.
Crosstown rivals from Ford and Ram boast similar capabilities from their trucks and have a little more polish inside.
(Particularly the Ram heavy-duty pickups.) The Toyota Tundra and Nissan Titan XD aren’t in the same league as the domestic heavy-duty trucks but offer four doors and an open bed with a more reasonable price tag if you’re considering a truck as a family vehicle.
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 2021 GMC Sierra 2500HD |  2021 Chevrolet Silverado 2500HD |  2021 Ram 2500 |  2020 Ford Super Duty F-250Get Your Price |  2020 Nissan Titan#4 in Pickup Trucks Get Your Price |  2020 Toyota TundraGet Your Price |
|---|---|---|---|---|---|
| Quick Specs | |||||
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The 2021 GMC Sierra Heavy Duty pickup lineup is impressive in its capability and performance. |
The ginormous 2021 Ram heavy-duty lineup reports for work, home, weekend, and hauling detail all at the same time. |
The 2020 Ford Super Duty has the towing technology and the goods to pull up to 37,000 pounds. |
The 2020 Nissan Titan full-size pickup still aims for the margins among pickup buyers, and its value falls down in top trims. |
The 2020 Toyota Tundra trades on its durable reputation rather than its appealing design. | |
| MSRP From | |||||
| $35,900 | $34,700 | $34,095 | $34,035 | $36,190 | $33,575 |
| Gas Mileage | |||||
| 15 MPG City / 22 MPG Hwy | 13 MPG City / 18 MPG Hwy | ||||
| Engine | |||||
| Gas V8 | Gas V8 | Premium Unleaded V-8 | Regular Unleaded V-8 | Premium Unleaded V-8 | Regular Unleaded V-8 |
| EPA Class | |||||
| N/A | N/A | N/A | N/A | N/A | N/A |
| Style Name | |||||
| 2WD Reg Cab 142" | 2WD Reg Cab 142" Work Truck | Tradesman 4x2 Reg Cab 8' Box | XL 2WD Reg Cab 8' Box | 4x2 King Cab S | SR Double Cab 6.5' Bed 5.7L (Natl) |
| Drivetrain | |||||
| Rear Wheel Drive | Rear Wheel Drive | Rear Wheel Drive | Rear Wheel Drive | Rear Wheel Drive | Rear Wheel Drive |
| Passenger Capacity | |||||
| 3 | 3 | 3 | 3 | 6 | 6 |
| Passenger Doors | |||||
| N/A | NA | N/A | N/A | N/A | N/A |
| Body Style | |||||
| Regular Cab Pickup | Regular Cab Pickup | Regular Cab | SD Regular Cab | King Cab | Double Cab |
| Transmission | |||||
| Automatic | Automatic | Automatic w/OD | Automatic w/OD | Automatic w/OD | Automatic w/OD |
| Detailed Spec Comparison | |||||
| 2021 GMC Sierra 2500HD vs. 2021 Chevrolet Silverado 2500HD | 2021 GMC Sierra 2500HD vs. 2021 Ram 2500 | 2021 GMC Sierra 2500HD vs. 2020 Ford Super Duty F-250 | 2021 GMC Sierra 2500HD vs. 2020 Nissan Titan | 2021 GMC Sierra 2500HD vs. 2020 Toyota Tundra | |
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