2026 GMC Sierra 3500 Performance Specs

Shopping for a heavy-duty, brand-new truck in Alpha or the surrounding areas? The 2026 GMC Sierra 3500 heavy-duty truck provides the confidence you need to tow heavy equipment on your job site in Philipsburg or haul a trailer to your favorite campsite out past West Easton. Join the team at our Easton dealership as we explore the 2026 GMC Sierra 3500 engine specs and performance-enhancing features. Contact us online to schedule a test drive of your favorite configuration in our showroom.

Three 2026 GMC Sierra HD heavy-duty pickup trucks parked among beach dunes

2026 GMC Sierra 3500 Engine Specs

The heavy-duty Sierra 3500 offers drivers a choice between two powerful engine options: the standard V8 gas engine and an available diesel engine. Both powertrains deliver outstanding performance, but the optional diesel provides more capability for drivers seeking maximum power on the roads of Easton and beyond. Compare the 2026 GMC Sierra 3500 engines in terms of their output below:

6.6L V8 Engine


Standard On: Pro, SLE, SLT, AT4, Denali

  • Drivetrain: RWD/4WD
  • Transmission: 10-speed automatic
  • Horsepower: 401 hp
  • Torque: 464 lb-ft

6.6L Duramax Turbo-Diesel V8 Engine


Available On: Pro, SLE, SLT, AT4, Denali, Denali Ultimate

  • Drivetrain: RWD/4WD
  • Transmission: 10-speed automatic or 10-speed automatic with integrated Power Take-Off (PTO)
  • Horsepower: 470 hp
  • Torque: 975 lb-ft
Black 2026 GMC Sierra HD AT4 powering across an open field
White 2026 GMC Sierra 3500 HD hauling equipment through the mountains

2026 GMC Sierra 3500 Performance Features

Beyond its impressive horsepower and torque, the 2026 GMC Sierra 3500 HD features several advanced technologies to enhance your on-road performance. These features guarantee a consistently smooth towing experience. Some of these performance-enhancing highlights include:

  • 4-wheel antilock disc brakes
  • Fully-boxed frame
  • Capless fuel fill
  • Heavy-duty air filter
  • Brake pad wear indicator
  • Integrated trailer brake controller
  • Black vertical recovery hooks
  • Air filtration monitoring
  • 170-amp alternator
  • External auxiliary transmission oil cooler
  • External engine oil cooler
  • 3.73 rear axle ratio

Test-Drive A 2026 Sierra 3500 For Sale At Star GMC Easton Today

Ready to transform your job site and daily hauls behind the wheel of a new GMC Sierra 3500? Call us or visit us at Star GMC Easton to set up a test drive of your preferred configuration. Our finance specialists are standing by to help you secure an auto loan or lease once you discover the right 2026 Sierra 3500 for your needs and budget.

2026 GMC Sierra HD

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Star GMC Easton

260 Country Club Rd, Easton, PA 18045

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Hours

Monday 9:00AM - 7:00PM
Tuesday 9:00AM - 7:00PM
Wednesday 9:00AM - 7:00PM
Thursday 9:00AM - 7:00PM
Friday 9:00AM - 6:00PM
Saturday 9:00AM - 5:00PM
Sunday Closed
Monday 8:00AM - 6:00PM
Tuesday 8:00AM - 6:00PM
Wednesday 8:00AM - 6:00PM
Thursday 8:00AM - 6:00PM
Friday 8:00AM - 6:00PM
Saturday 8:00AM - 2:00PM
Sunday Closed
Monday 8:00AM - 6:00PM
Tuesday 8:00AM - 6:00PM
Wednesday 8:00AM - 6:00PM
Thursday 8:00AM - 6:00PM
Friday 8:00AM - 6:00PM
Saturday 8:00AM - 2:00PM
Sunday Closed