Wright GMC • Lufkin, TX

2026 GMC Sierra 3500 HD Near Lufkin, TX

36,000lbs
Max Towing
When Properly Equipped†
470hp
Max Horsepower
Duramax 6.6L Diesel
975
lb-ft Torque
Duramax Diesel†
15
Camera Views
Virtual Spotting System
13.4"
Touchscreen
Google Built-In
2026 GMC Sierra 3500 HD near Lufkin TX
Overview

Overview of the Vehicle

The 2026 GMC Sierra 3500HD receives minimal updates while maintaining heavy-duty supremacy with two potent engines. The standard 6.6-liter V-8 produces 401 horsepower and 464 lb-ft of torque, while the Duramax 6.6-liter turbo-diesel delivers 470 horses and 975 lb-ft of twist. Both engines pair with a 10-speed automatic transmission. The 3500HD’s dual-rear-wheel configuration maximizes towing capacity up to 36,000 pounds when properly equipped. Real-world testing shows the diesel achieving around 17 mpg highway.

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2026 GMC Sierra 3500 HD Technology
Technology

Technology Highlights

Sierra 3500HD features an available 13.4-inch touchscreen with Google Built-in functionality and wireless Apple CarPlay/Android Auto. The innovative 15-view camera system provides virtual spotting assistance, making maneuvering easier. Standard safety includes automated emergency braking and lane-departure warning, with available blind-spot monitoring and adaptive cruise control enhancing driver confidence.

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2026 GMC Sierra 3500 HD Design Styling
Design & Styling

Design & Styling

Available in regular, double, and crew-cab configurations, the Sierra 3500HD ranges from rugged AT4 to luxurious Denali trims. The versatile MultiPro tailgate and built-in bed steps enhance functionality. Interior quality varies by trim level, with higher models featuring premium materials and comfortable seating for up to six passengers.

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2026 GMC Sierra 3500 HD Awards
Awards & Accolades

Awards & Accolades

Car and Driver awards the Sierra HD a 6.5/10 rating, praising its smooth ride and diesel performance. While ranking fourth in the heavy-duty segment, it earns recognition for configurability and surprising agility given its substantial size and capability.

Experience heavy-duty excellence near Lufkin at Wright GMC today.

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2026 GMC Sierra 3500 HD Trim Levels

From the hard-working Pro to the refined Denali — find your Sierra 3500 HD at Wright GMC near Lufkin, TX.

2026 GMC Sierra 3500 HD Pro
Sierra HD Pro
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2026 GMC Sierra 3500 HD SLE
Sierra HD SLE
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2026 GMC Sierra 3500 HD SLT
Sierra HD SLT
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2026 GMC Sierra 3500 HD AT4
Sierra HD AT4
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2026 GMC Sierra 3500 HD AT4X
Sierra HD AT4X
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2026 GMC Sierra 3500 HD Denali
Sierra HD Denali
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Frequently Asked Questions

What engines are available on the 2026 GMC Sierra 3500 HD?

The 2026 Sierra 3500HD offers two engines: a standard 6.6-liter V-8 producing 401 horsepower and 464 lb-ft of torque, and an available Duramax 6.6-liter turbo-diesel delivering 470 horsepower and 975 lb-ft of torque. Both pair with a 10-speed automatic transmission. Source: gmc.com

What is the towing capacity of the 2026 Sierra 3500 HD?

The 2026 GMC Sierra 3500HD can tow up to 36,000 pounds when properly equipped with the dual-rear-wheel configuration and Duramax diesel engine. Towing capacity varies by configuration, cab size, and powertrain. Source: gmc.com

What cab configurations are available on the 2026 Sierra 3500 HD?

The 2026 GMC Sierra 3500HD is available in regular cab, double cab, and crew cab configurations, with standard and long bed options depending on trim. Source: gmc.com

What technology does the 2026 GMC Sierra 3500 HD include?

The 2026 Sierra 3500HD features an available 13.4-inch touchscreen with Google Built-in, wireless Apple CarPlay and Android Auto, and an innovative 15-view camera system with virtual spotting assistance. Standard safety includes automated emergency braking and lane-departure warning. Source: gmc.com

What trim levels are available on the 2026 Sierra 3500 HD?

The 2026 GMC Sierra 3500HD is available in Pro, SLE, SLT, AT4, AT4X, and Denali trim levels, ranging from hardworking utility configurations to luxurious Denali and rugged off-road AT4X variants. Source: gmc.com

Where can I find a 2026 GMC Sierra 3500 HD near Lufkin, TX?

Wright GMC is located at 1703 S First St, Lufkin, TX 75901. Visit us to explore the full 2026 Sierra 3500 HD lineup and find the right configuration for your needs.

†Maximum towing capacity when properly equipped with dual-rear-wheel configuration and available Duramax diesel engine. Towing capacity varies by engine, drivetrain, cab size, and configuration. Before towing, always review the Owner’s Manual and towing guide. Fuel economy figures are real-world estimates; EPA does not rate fuel economy for heavy-duty vehicles. Specs sourced from gmc.com. Awards data sourced from caranddriver.com. Inventory, pricing, and availability subject to change without notice.