---
id: 2026-gmc-sierra-hd-model-research-specs
title: "2026 GMC Sierra HD Model Research & Specs"
category: page
subtopic: sierra-hd-research
page_type: page
source_url: "https://www.markquartmotors.com/research/gmc/sierra-hd.htm"
tags: ["GMC", "Sierra HD", "new vehicles", "research", "specifications"]
questions:
  - "Where can I research the 2026 GMC Sierra HD?"
  - "What are the GMC Sierra HD specs?"
  - "Tell me about the new Sierra HD"
related: [sierra-hd-towing, sierra-hd-engine-options, sierra-hd-interior-features, sierra-hd-vs-competitors]
dealer: Markquart Motors
---

The 2026 GMC Sierra HD is engineered for demanding work and serious trailering, offering thrilling performance across 2500 HD and 3500 HD configurations. Available powertrains include a robust 6.6L V8 gas engine and the Duramax 6.6L Turbo-Diesel V8 with 470 hp and 975 lb-ft of torque. Max towing reaches 36,000 lbs on properly equipped models, with advanced trailering tech and up to 14 camera views including Transparent Trailer View. Interior highlights include available 16-way massaging seats, premium Denali Ultimate trims, and a 13.4-inch infotainment system. Bold exterior styling features LED lighting and the available MultiPro Tailgate. Markquart Motors in Chippewa Falls has new Sierra HD inventory ready for you to explore. Call (715) 833-0444 or visit to start your research in person.