Big jobs crave big trucks and the 2020 GMC Sierra HD rises to the claiming with copious actualization and massive tow ratings. The Sierra 2500HD and 3500HD allotment mechanicals with the able Chevy Silverado, but the GMC has a audibly altered appearance. Like the Chevy, it faces off adjoin appropriately able rivals such as the Ford Super Duty and Ram HD. While the big-bodied Sierra is appropriately able and configurable, its choice Denali trim akin isn’t absolutely as adorned as the best adventurous able Ram’s. Still, the GMC satisfies pickup-truck purists with its refined, able-bodied Duramax agent V-8 and accurate Allison transmission. Plus, the 2020 Sierra HD offers a deluge of applied and abstruse actualization that ambit from a able multifunction tailgate to avant-garde trailering assists.
The Sierra 2500HD and 3500HD accept been absolutely redesigned for 2020. Together they get a bolder-looking exterior, reimagined interiors, adapted powertrains, essentially added burden and tow ratings, and altered and adroit features. The HD twins additionally add a new off-road-oriented model—called AT4—that GMC is starting to brand throughout its portfolio. We’ve afresh apprenticed the Acadia AT4; the all-new 2021 Yukon will get the kit, too.
There are a lot of variables back it comes to configuring a auto truck—unless it’s the one-size-fits-all Honda Ridgeline. Still, the best accepted pickups these canicule action a aggregation cab, so we’d alpha with that and accept the accepted bed on the Sierra 2500HD. We’d beacon bright of the asperous AT4 and chrome-laden Denali models admitting their added appearance. Instead, we’d acclaim acrimonious the SLT trim akin and abacus all-wheel drive and the Duramax agent V-8. The SLT comes accepted with GMC’s able MultiPro tailgate, a acrimonious council wheel, acrimonious advanced seats, power-adjustable advanced seats, and alien start. It additionally unlocks added options than the bottom SLE trim. We’d aces the SLT Convenience amalgamation that includes advanced brazier seats with aerial cushions, acrimonious rear seats, and a power-sliding rear window. The Driver Active bales are additionally account abacus because they accomplish the behemoth easier to alive with acknowledgment to assists such as blind-spot monitoring, lane-departure warning, and advanced and rear parking sensors.
The Sierra HD comes accepted with a gas-powered 6.6-liter V-8 that generates 401 application and 464 lb-ft of torque. It pairs with a six-speed automatic manual and rear- or all-wheel drive. The alternative Duramax agent 6.6-liter V-8 cranks out 445 ponies and 910 lb-ft of twist, and it works through an Allison 10-speed automatic. You can additionally specify either a single- or dual-rear-wheel arbor (known as a “dually”). While we’ve alone apprenticed the agent variant, we did sample the gas-burning powertrain on the internally identical Silverado 2500HD and accepted its binding behavior. However, there’s no arguing that the Duramax/Allison aggregate is a highlight of the able Sierra, and it’s a breeze for those who consistently tow abundant loads. The agent is decidedly refined, and the manual is actual responsive. Together they helped the 2500HD Denali we activated accomplish impressively quick dispatch times. The gigantic GMC additionally has an acceptable ride affection for its breed. Though its council is ambiguous at artery speeds the Sierra nonetheless feels added active than its able competitors. The trail-ready AT4 archetypal is a more-rugged booty on the frequently chrome-riddled rig, with an off-road abeyance and a locking rear cogwheel to go with its contrarily blacked-out aesthetic.
Michael SimariCar and Driver
The arch Sierra 3500HD can backpack 7442 pounds in its burden bed and cull as abundant as 35,500 pounds. However, those massive capacities crave the agent engine, approved cab, rear-wheel drive, and dual-rear-wheel axle. The Sierra 2500HD is alone offered with a single-rear-wheel axle, and its burliest adaptation is acceptable for 3979 pounds of burden and 18,500 pounds of towing.
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Since the EPA doesn’t analysis cartage as abundant as the Sierra HD and its gigantic competitors, we can alone adjudicator their real-world mpg on our artery fuel-economy route. We’ve alone activated a Sierra 2500HD Denali with the agent engine, which becoming 17 mpg on the highway. For comparison, the diesel-powered Silverado 2500 LTZ aggregation cab and Ram 2500 Tradesmen approved cab diesels we activated both managed 19 mpg. Those who stick with the GMC’s accepted gas-fed V-8 should apprehend to see alike worse ammunition abridgement than the agent option.
Inside, the Sierra 2500HD and 3500HD accept a huge dashboard that hosts convenient switchgear. Best models accept a split-folding advanced bank that can be replaced with a brace of brazier seats and a abounding centermost console. The Sierra’s autogenous can additionally be optioned with a class-exclusive head-up display, a acrimonious council wheel, heated-and-cooled advanced seats, and wireless charging. Unfortunately, the cabin’s console fits and actual affection are characterless at best. While there’s an affluence of bendable blow surfaces throughout, and best models account from abiding plastics, the top-of-the-line Denali avalanche woefully abbreviate of its affluence billing. The fanciest alternatives from Ram adumbrate the GMC abundantly acknowledgment to their decidedly added flush attending and feel. Still, the Sierra HD will amuse pickup-truck buyers who accent acumen and versatility. Along with all-encompassing commuter amplitude in the aggregation cab, the GMC is blowzy with attainable autogenous accommodation storage. Its accepted and continued burden boxes accept congenital accomplish on both abandon of the bed and the rear bonanza has them at anniversary corner. The box can be added customized with LED lighting, adaptable tie-downs, and a 120-volt outlet. The able Sierra’s better showpiece is its avant-garde multi-function tailgate, which has six altered positions that accommodate a assignment apparent and bench. It’s a tailgater’s dream appear true.
Michael SimariCar and Driver
Every Sierra HD has a accepted touchscreen infotainment arrangement with Apple CarPlay and Android Auto. While abject models accept beneath options, they can still be outfitted with a 120-volt aperture and a adaptable hotspot. Best trim levels accept an 8.0-inch awning and added charging ports. All systems accommodate a set of rotary knobs and concrete buttons that are calmly accessible. The beyond touchscreen can be upgraded with congenital navigation, a Bose audio system, SiriusXM accessory radio, and a rear-seat ball system. GMC additionally offers a smartphone app that can be acclimated to accidentally ascendancy bivouac functions. Likewise, the truck’s infotainment arrangement allows users to abundance altered bivouac profiles to adviser maintenance.
The 2020 Sierra HD hasn’t been blast activated by the National Artery Traffic Assurance Administration (NHTSA) or the Insurance Institute for Artery Assurance (IIHS). While the barter can be able with assorted driver-assistance technology, none of it comes standard, and able rivals action alike added assists. However, the GMC does accept a absolute camera arrangement that actualization up to 15 altered examination modes, including a “transparent” approach that allows the user to around see through an absorbed bivouac as if it wasn’t there. Key assurance actualization include:
GMC provides a aggressive assurance plan that matches the advantage provided by its Ford and Ram rivals but, clashing those alternatives, it does accommodate one adulatory appointed aliment visit.
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