It’s so alluring that we spent much of our test goosing the Sierra from stoplights and generally driving the thing pretty hard. Either way, the 6.2-powered Sierra is a seriously quick beast, and the V-8 sounds fantastic at full throttle. We’d attribute part of its split performance to slight differences in shifting strategies between the six- and eight-speed transmissions and chalk up the rest to the extra weight. Weighing just a smidge over 100 pounds heavier than that truck, this 2016 model and its eight-speed gearbox reached the same marks in 5.6 seconds and 14.0 seconds. That loaded 2014 Sierra 1500 Denali 4x4 with the 6.2 and the six-speed automatic-again, almost identical to this truck, save for the gearbox-hit 60 mph in 5.4 seconds and tore through the quarter-mile in 14.1 seconds at 99 mph. The 6.2’s 420 horsepower shove the Sierra around with no problem. (In the Vette, the 8L90’s orientation is mounted in the rear, where it serves as a transaxle.) The connections to General Motors’ sports car don’t end there-as we’ve noted before, the fire-breathing 6.2-liter small-block V-8 is derived from the Corvette’s V-8 engine, although tuned to produce torque lower in the rev range for better towing and hauling performance. The eight-speed is the same 8L90 unit used in the Corvette, albeit with a different casing for its traditional placement directly behind the engine. (The base 4.3-liter V-6 remains the only engine that hasn’t been bolted to the eight-speed, for now.) Otherwise, the Sierra experience is familiar, much the same as that of the 20 iterations. The 2016 model year also marked the first expansion in availability of the eight-speed beyond the 6.2-liter, to SLT and Denali models with the 5.3-liter V-8. GMC administered an industry-standard mid-cycle refresh to the truck for 2016, updating the headlights and grille while adding Apple CarPlay and Android Auto phone-mirroring to its available touchscreen infotainment systems. Since adopting the eight-speed as its sole transmission partner for 2015, the 6.2-liter V-8 hasn’t changed-but the Sierra has, if only just. Our first test of the GMC with the eight-speed comes in a 2016 Sierra 1500 Denali with the available 6.2-liter V-8, which sets up a neat comparison-we tested a nearly identical 2014 Sierra Denali 4x4 with the same engine and the old six-speed automatic two years ago. Introduced to the Sierra in 2015 paired only with the biggest engine available, a 420-hp 6.2-liter V-8, the eight-speed has since become an option on certain Sierras equipped with the 5.3-liter V-8, tracing a path through the Sierra family similar to the same transmission’s injection into the Chevrolet Silverado lineup. showroom's got more than a few other stellar-quality GMC models on proud display, and the ideal way to get a feel for one is with a test drive we're sure you won't forget.The spread of General Motors’ eight-speed automatic transmission through the GMC Sierra 1500 lineup is nearly complete. It's a towering leg up over the competition, and a blast to drive.īut if you're still exploring the world of used trucks here in Phoenix, our 2021 E. Looking for a little advice from the truck experts here at Lifted Trucks? Go for a lifted model if you're planning to get down and dirty over the south-central Arizona terrain. You can even opt for models with an All Terrain Package for a trifecta of presence, power, and pulling chops to top it all off. No matter your predilection, though, GMC Sierra 2500HD is configurable to spec indoors and out. Plus, a wide range of cab options presents, including regular, double, and crew, alongside your choice of a standard or long bed, accommodating everything from the contents of your mobile office to the few weekend warriors you're taking off-grid. That's thanks to a host of powerful gas and torquey, high-efficiency diesel engine options to match a stylish, refined, and most of all, comfortable and quiet Sierra 2500HD interior. What's more, GMC Sierra 2500HD makes for a smooth operator just as far down the open highway as off the trail. Ascending from trims like the Sierra base, through mid-level 2500HD SLE and SLT, all the way to such upscale head-turners as GMC Sierra 2500HD Denali, you'll find trailer-towing and payload-lugging champions to flank those designed to own the off-road. That's where the extensive array of used GMC Sierra 2500HD models here at Phoenix's own Lifted Trucks comes in. But you can't rely on just any used heavy-duty pickup for the long haul. That's not to mention the work to be done in Mesa, lugging equipment offsite to Glendale, picking up a few crewmen in Peoria, and the gamut of the grind everywhere in between. There are orders of the day aplenty out of Scottsdale. The Duty Roster in Phoenix, AZ is No Tall Order for a Pre-Owned GMC Sierra 2500HD
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