2026 GMC Sierra Heavy Duty
2026 GMC Sierra Heavy Duty
Welcome to Circle Buick GMC, your trusted dealership in Highland, Indiana, proudly offering the new 2026 GMC Sierra Heavy Duty. Designed for maximum capability and modern refinement, the Sierra HD lineup includes trims built for work, adventure, and luxury. Explore the details of each trim below to discover which model best fits your needs.
2026 Sierra Heavy Duty Overview
The 2026 Sierra HD (2500HD / 3500HD) delivers remarkable performance with up to 36,000 lbs of towing capacity, advanced trailering tech, and the available Duramax® 6.6L Turbo-Diesel V8 engine. GMC also equips this truck with innovations like the MultiPro™ Tailgate and an available 15-inch Head-Up Display. At Circle Buick GMC, we are proud to provide Indiana drivers with the full Sierra HD lineup backed by expert service and financing options. Source: GMC official site, Sierra HD overview
Sierra HD Pro Trim
The Pro trim is built to be the reliable foundation of the Sierra HD family. It comes standard with a 6.6L gas V8 engine, 10-speed automatic transmission, trailering package, and trailer brake controller. Inside, you’ll find wireless Apple CarPlay® and Android Auto™ to keep you connected. This trim is ideal for those who need uncompromising capability at an approachable price. Source: GMC official site, Sierra HD Pro trim highlights
Sierra HD SLE Trim
Upgrade to the SLE trim for more advanced technology and style. Drivers benefit from a 13.4-inch infotainment touchscreen, a 12.3-inch digital driver display, and the Traction Select System with Tow/Haul mode. The SLE also introduces options like the MultiPro Tailgate and enhanced trailer view cameras, giving Highland drivers more control and convenience on every job. Source: GMC official site, Sierra HD SLE trim highlights
Sierra HD SLT Trim
The SLT trim builds on the SLE with elevated comfort and premium touches. Standard features include heated front seats, a heated steering wheel, ProGrade® Trailering System, and stylish 18-inch machined aluminum wheels. Available upgrades include ventilated leather seating and premium camera views. The SLT balances hard-working strength with upscale amenities. Source: GMC official site, Sierra HD SLT trim highlights
Sierra HD AT4 & AT4X Trims
For rugged terrain and off-road power, the AT4 and AT4X trims deliver:
- AT4: Outfitted with Off-Road Suspension, Rancho® shocks, skid plates, 20-inch gloss-black wheels, and Jet Black/Kalahari interior accents.
- AT4X: The ultimate off-road variant, featuring a factory lift, Multimatic® DSSV dampers, electronic locking rear differential, 35-inch tires, and Obsidian Rush leather interior with high-end technology.
Both trims provide durability and advanced systems for drivers tackling Indiana’s toughest worksites and outdoor adventures. Source: GMC official site, Sierra HD AT4/AT4X trim highlights
Sierra HD SLT Trim
The SLT trim builds on the SLE with elevated comfort and premium touches. Standard features include heated front seats, a heated steering wheel, ProGrade® Trailering System, and stylish 18-inch machined aluminum wheels. Available upgrades include ventilated leather seating and premium camera views. The SLT balances hard-working strength with upscale amenities. Source: GMC official site, Sierra HD SLT trim highlights
Sierra HD Denali & Denali Ultimate Trims
At the top of the lineup, the Denali and Denali Ultimate trims showcase luxury and innovation:
Denali: Features chrome exterior accents, 20-inch Ultra-Bright machined wheels, real wood interior trim, leather seating, and ventilated 12-way power front seats.
Denali Ultimate: Adds exclusive Vader Chrome grille, Alpine Umber leather interior, 16-way massaging front seats, Bose® 12-speaker surround sound, and illuminated power steps.
These trims combine bold performance with luxury normally reserved for premium SUVs. Source: GMC official site, Sierra HD Denali/Denali Ultimate highlights
Why Choose Circle Buick GMC in Highland, Indiana
At Circle Buick GMC, we proudly serve Highland and surrounding communities with expert knowledge of the GMC Sierra Heavy Duty lineup. From Pro to Denali Ultimate, our team will help you select the right truck, customize it for your needs, and maintain it with certified GMC service. Visit us in Highland, Indiana, to test drive the 2026 Sierra HD and experience capability, durability, and luxury firsthand.
Sources: GMC Official Website – 2026 Sierra HD Overview and Trim Details (gmc.com/trucks/sierra/2500hd-3500hd)
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