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The 2023 GMC Sierra 3500HD is a heavy-duty, full-size pickup truck designed for serious towing and hauling duty. It's available in five trims: Sierra, SLE, SLT, AT4 and Denali. Engine options are stout, including a standard 6.6-liter V8 with 401 horsepower and an optional 6.6-liter Duramax turbodiesel V8 with 445 horsepower, coupled with Allison 10-Speed automatic transmission. Equipped properly, it can tow up to 36,000 lbs. All models come with a touchscreen infotainment system, available in 7-inch or 8-inch sizes, and include Apple CarPlay and Android Auto compatibility. Notable safety features include standard rearview camera, available front and rear park assist, lane departure warning, forward collision alert and automatic emergency braking. The 2023 model year is anticipated to receive a minor visual refresh, with most mechanicals carried over from the previous year.
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