Those who persist with the GMC’s normal gas-fed V-8 ought to count on to see even worse gasoline economic system than the diesel choice. For comparability, the diesel-powered Silverado 2500 LTZ crew cab and Ram 2500 Tradesmen common cab diesels we examined each managed 19 mpg. We’ve solely examined a Sierra 2500HD Denali with the diesel engine, which earned 17 mpg on the freeway. Since the EPA does not check autos as heavy because the Sierra HD and its gigantic rivals, we are able to solely decide their real-world mpg on our freeway fuel-economy route. Maximum typical towing for the diesel powertrain is 20,000 kilos. The Sierra 2500HD is just provided with a single-rear-wheel axle, and its burliest model is sweet for 3979 kilos of payload and 18,500 kilos of towing. However, these huge capacities require the diesel engine, common cab, rear-wheel drive, and dual-rear-wheel axle. The strongest Sierra 3500HD can carry 7442 kilos in its cargo mattress and pull as a lot as 35,500 kilos with a gooseneck trailer. More on the Sierra HD Pickup Truck Towing and Payload Capacity While we have solely pushed the diesel variant, we did sample the gas-burning powertrain on the mechanically similar Chevy Silverado 2500HD You also can specify both a single- or dual-rear-wheel axle (the long-lasting “dually”). The optionally available Duramax diesel 6.6-liter V-8 cranks out 445 ponies and 910 pound-feet of mountain-hauling twist, and it really works via an Allison 10-speed computerized. It pairs with a six-speed computerized transmission and rear- or four-wheel drive. The Sierra HD comes normal with a gas-powered 6.6-liter V-8 that generates 401 horsepower and 464 pound-feet of torque.
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The Driver Alert packages are additionally value including as a result of they make the behemoth simpler to stay with because of assists comparable to blind-spot monitoring, lane-departure warning, and entrance and rear parking sensors. We’d choose the SLT Convenience bundle that features entrance bucket seats with ventilated cushions, heated rear seats, and a power-sliding rear window.
It additionally unlocks extra choices than the lesser SLE trim. The SLT comes normal with GMC’s versatile MultiPro tailgate, a heated steering wheel, heated entrance seats, power-adjustable entrance seats, and distant begin. Instead, we might suggest selecting the SLT trim degree and including four-wheel drive and the diesel V-8. We’d avoid the rugged AT4 and chrome-laden Denali fashions regardless of their enhanced look. We’d begin with the crew cab and select the usual mattress on the Sierra 2500HD. That’s as a result of GMC will announce a mid-cycle refresh for the 2024 Sierra HDs that features much more energy, torque, and towing capability. The heavy-duty GMC Sierra 2500HD and 3500HD obtain no dramatic tools modifications for 2023. The distinction between the GMC and Chevy’s Silverado HD is sort of completely visible, however the bow-tie various does supply a extra reasonably priced entry into mega-truck-dom. The Sierra comes with loads of trailer-assist expertise and even an optionally available multifunctional tailgate, however it’s considerably outclassed by newer rivals such because the Ford Super Duty and Ram HD. If that feels like an excessive amount of truck, the half-ton Sierra 1500, reviewed individually, is a correct various. The latter will get a 10-speed computerized and is the powertrain of selection for the Sierra 3500 should you plan on using its 20,000 kilos of max typical towing functionality. Built to maneuver the world, the heavy-duty Sierras are provided with both a 401-hp 6.6-liter V-8 and six-speed computerized transmission or a 445-hp 6.6-liter V-8 Duramax Diesel with 910 pound-feet of torque. The heavy responsibility pickup vans that roam North America like overfed elk don’t have any antlers, however rubbing up towards a tree or two with the GMC Sierra 2500HD or 3500HD in all probability received’t damage it a lot both.
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