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The 2021 GMC Sierra 3500HD CC, a part of the fourth-generation Sierra, is a robust and tech-friendly heavy-duty truck. It offers two engine options: a 401-hp 6.6L V8 gas engine and a more powerful 445-hp 6.6L Duramax Turbo-Diesel V8. A six-speed automatic transmission is standard, with the option for an Allison® 10-speed automatic. The Sierra 3500HD CC boasts a max towing capacity of 36,000 lbs. and offers 2WD or 4WD drivetrain. It’s available in three trims: base, SLE and SLT. Key safety features include forward collision alert, automatic emergency braking, and lane departure warning. The truck features a 7-inch or optional 8-inch Infotainment display with Apple CarPlay and Android Auto compatibility. Besides, the MultiPro Tailgate with six functional configurations is a standout feature for the model year.
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