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2018 GMC Sierra 2500HD Overview
Based on the Silverado HD, the 2018 Sierra 2500HD ups the ante in terms of luxury, style, and price. The Sierra lineup got a full redesign in 2017, so changes for 2018 are minimal but worth noting. All Sierras now come standard with a reversing camera and 7.0-inch touchscreen, and the range-topping Denali gets a redesigned grille. Drivers can choose between the base Sierra, SLE, and SLT trims, although the sharp-looking Denali model has remained the most popular despite its higher price. Buyers also have the choice of regular cab, double cab, or crew cab with either an eight-foot or six-and-half-foot box. Unlike with the Chevy Silverado, there is no model available for fleet orders that commercial customers might be interested in.
Buyers also have the choice of two engines. The 6.0-liter V-8 makes 360 horsepower and 380 pound-feet of torque, enabling the Sierra to tow up to 14,800 pounds in the rear-drive configuration and carry a payload of up to 3,500 pounds. Serious haulers will opt for the stout 6.6-liter turbodiesel with an imposing 910 lb-ft of torque, which is enough grunt to enable the Sierra to tow up to 18,000 pounds. Both V-8s are coupled to a 6-speed automatic transmission, and although rear-wheel drive is standard, four-wheel drive is of course a popular option. The EPA doesn’t rate large trucks like this so there are no official fuel economy figures, but expect gas milage to reflect the truck’s purpose. Suspension is fairly traditional for a large truck like this, with struts up front and leaf springs in the rear.
While the Sierra is impressive on the road, it really beats other pickups is in the cab. In the more expensive trims, it has a level of comfort and tech to rival proper luxury sedans. Base Sierra 2500HDs come with Bluetooth connectivity, cloth seats, and 7.0-inch infotainment screens, but things pick up quickly from there. The Sierra 2500HD SLE model adds keyless entry, a 4.2-inch driver info display, a remote locking tailgate, and an upgraded 8.0-inch infotainment screen, while the SLT model adds leather upholstery, remote start, and dual-zone automatic climate control. The SLT model is also available with the recently introduced All Terrain X HD package that is essentially a blackout treatment for the entire truck from top to bottom, including the wheels.
The range-topping Denali model retains its popularity by offering luxuries deserving of its nearly $60,000 starting price. In addition to the comforts of the SLT, this well-appointed truck comes with heating and cooling for the front seats, a heated steering wheel, wireless charging, a navigation system, and a premium Bose stereo.
While the powers that be don’t do the usual run of crash tests on a truck this size, the tests the Sierra has completed have yielded decent results. All Sierras come with a reversing camera, while the Denali gets active safety features like forward collision warning, lane departure warning, and parking assist front and back. Being a GM vehicle, OnStar is also an important feature to consider, and the Teen Driver Alert system is also available.
Since 2012, Andrew Newton has been writing about cars both old and new. Andrew has been an associate editor at Sport Car Digest as well as a contributor to sites like BoldRide and JamesEdition. He was also the Education Manager at the Larz Anderson Auto Museum in Brookline, MA before becoming the Auction Editor at Hagerty Classic Car Insurance. He currently splits his time behind the wheel between his NA Miata, 1994 Corvette, and Triumph TR6.
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