A 6.6L V8 engine is the standard power plant for the two trucks, it makes 401 horsepower and 464 lb-ft of torque and sends power to the rear wheels via a 6-speed automatic, though four-wheel drive is available. Chevrolet claims that the combination is good for 18 percent more towing capacity when compared to last year's V8 model, thanks to the extra power and torque from the new engine.
The optional engine on the Silverado HD is also a 6.6L V8, however this one runs on diesel and is turbocharged. Power sits at 445 horsepower, but more important are the 910 lb-ft of torque the engine makes, enough to tow 35,000 lbs, a 52 percent increase over last year's diesel model. Power is transferred to the rear or all-four wheels via a brand new 10-speed automatic transmission. And if owners do spec four-wheel drive on their Silverado HD, the truck comes with an automatic two-speed transfer case, allowing for shorter gearing when traveling off road.

The Chevrolet Silverado HD comes in two basic forms, the smaller 2500HD and the larger dual rear wheel setup 3500HD. The most basic trim is simply dubbed Work Truck and comes with all the basics, along with matte black bumpers and 18-inch wheels. For a bit more exterior flash, the Custom trim includes 20-inch wheels and body colored trim details. The LT trim gets additional chrome details on the exterior while the LTZ trim gets even more chrome and LED daytime running lights and headlights. It also gets LED taillights.

At the top of the lineup, is the High Country trim which gets its own distinctive front fascia with additional LED lighting and 20-inch polished aluminum wheels on the 2500 or 17-inch polished forged aluminum wheels on the 3500. The High Country also adds cooled bucket seats with power lumbar support and an integrated navigation system.

Chevrolet have determined that the vast majority of Silverado HD customers use their truck for towing and as a result they've concentrated on making the latest generation of the truck the ideal tow vehicle. Standard on the new truck are larger, more functional door mounted trailering mirrors which can extend and retract manually, or when optioned via the press of a button. These mirrors also now come with a forward facing spot lamp and optionally, rearward facing cameras. An optional tailgate mounted camera and a camera that can be installed in the back of the trailer provide what Chevrolet are calling their "transparent trailer view" which provides huge benefit when taking sharp corners or when trying to maneuver in parking lots.

Other technology provided on the Silverado HD to help trailering include an auto park brake assist, an integrated trailer brake controller, an enhanced towing mode that will stay on even if the car is turned off (though it will flash a remind to the driver to make sure it isn't left on erroneously,) a trailer sway control mode and an auto grade braking system that should help keep things in control when going down a hill while towing a heavy load.

Superior Heavy-duty Towing And Hauling Capability

Brand New Design

Powerful Engine Lineup

Wide Variety Of Configurations

Available 4-wheel Drive

After an extensive redesign in 2020, the 2021 Silverado HD lineup receives minor changes to features and equipment. Special Edition models are also being introduced.

While the standard Silverado represents a pretty good value for those wanting a work truck that's easy to live with, the Silverado HD offers far more utility than the standard truck with the ability to tow bigger loads and generally fit more in their beds. However, like most modern pickup trucks, the Silverado HD models offer a fair amount of livability considering how capable they are as work vehicles. Both the 2500HD and the 3500HD models can be optioned up with a ton of interior convenience features as well as the latest safety equipment. In addition, Chevrolet have gone out of the way to add technology where these vehicles will need it: Towing. The new Silverado HD offers up to fifteen unique camera views including a "transparent trailer" mode that offers to revolutionize rear visibility while towing.