SLE 4x2 Crew Cab 6.75 ft. box 158.9 in. WB
2021 GMC Sierra 2500HD

2021 Sierra 2500HD Photos
The 2021 GMC Sierra Heavy Duty is the uptown cousin of the Chevrolet Silverado HD. It was updated last year, and for 2021 it gets two new models, one for off-road (X31) and another for luxury (Denali Black Diamond). It comes in 2500 and 3500 versions, with single- or dual-rear-wheel configurations, and a choice of two V-8 engines, standard or turbodiesel. Regular-, double-, or crew-cab configurations are available, the last of which is most popular.

Probably even more than other trucks in its class, the Sierra is all about size, at least from a visual standpoint, with its hugely wide and tall grille, and body sides that are equally imposing in their length and mass.

The standard 6.6-liter V-8 makes 401 horsepower, mated to a 6-speed automatic transmission, and can carry more than 6,000 pounds in the bed. The other engine, a 6.6-liter V-8 turbodiesel, makes an astounding 910 pound-feet of torque to go with its 445 hp. That enables it to tow up to 35,500 pounds. It's quite expensive, so practically speaking, it's only useful if you commonly haul heavy trailers, for example full of racecars or horses. It uses a smooth 10-speed automatic transmission. Good thing.

The common crew cabs are very comfortable places to be for up to five adults. GMC offers short or long beds (except regular-cab pickups, which only offer a long bed), that are deep and wide, with a trick tailgate on most models.

It's not unheard-of for trucks of this size to get city fuel economy in the single digits; out on the highway, the Sierra HD can settle into a lope in the high teens, when there's no trailer attached. Crew-cab models have a 36-gallon fuel tank that at least extends the range.

The EPA and the NHTSA don't subject these trucks to testing. The Sierra doesn't have features such as automatic emergency braking.
Full Review

The 2021 GMC Sierra Heavy Duty is the uptown cousin of the Chevrolet Silverado HD. It was updated last year, and for 2021 it gets two new models, one for off-road (X31) and another for luxury (Denali Black Diamond). It comes in 2500 and 3500 versions, with single- or dual-rear-wheel configurations, and a choice of two V-8 engines, standard or turbodiesel. Regular-, double-, or crew-cab configurations are available, the last of which is most popular.

Probably even more than other trucks in its class, the Sierra is all about size, at least from a visual standpoint, with its hugely wide and tall grille, and body sides that are equally imposing in their length and mass.

The standard 6.6-liter V-8 makes 401 horsepower, mated to a 6-speed automatic transmission, and can carry more than 6,000 pounds in the bed. The other engine, a 6.6-liter V-8 turbodiesel, makes an astounding 910 pound-feet of torque to go with its 445 hp. That enables it to tow up to 35,500 pounds. It's quite expensive, so practically speaking, it's only useful if you commonly haul heavy trailers, for example full of racecars or horses. It uses a smooth 10-speed automatic transmission. Good thing.

The common crew cabs are very comfortable places to be for up to five adults. GMC offers short or long beds (except regular-cab pickups, which only offer a long bed), that are deep and wide, with a trick tailgate on most models.

It's not unheard-of for trucks of this size to get city fuel economy in the single digits; out on the highway, the Sierra HD can settle into a lope in the high teens, when there's no trailer attached. Crew-cab models have a 36-gallon fuel tank that at least extends the range.

The EPA and the NHTSA don't subject these trucks to testing. The Sierra doesn't have features such as automatic emergency braking.
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Retail Price

$45,400 MSRP / Window Sticker Price
Engine 6.6L V-8
MPG
Seating 6 Passengers
Transmission 6-spd auto w/OD
Power 401 @ 5200 rpm
Drivetrain rear-wheel
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