---
id: does-the-2026-gmc-sierra-hd-offer-a-diesel-engine
title: "Does the 2026 GMC Sierra HD offer a diesel engine?"
category: faq
subtopic: sierra-hd-diesel
page_type: faq
source_url: "https://www.markquartmotors.com/research/gmc/sierra-hd.htm"
tags: ["GMC", "Sierra HD", "diesel", "Duramax", "engine"]
questions:
  - "Is there a diesel Sierra HD?"
  - "Duramax 6.6L Turbo-Diesel option"
  - "Diesel engine GMC Sierra"
related: [sierra-hd-towing, sierra-hd-performance]
dealer: Markquart Motors
---

Yes! The 2026 GMC Sierra HD offers the available Duramax 6.6L Turbo-Diesel V8 engine, legendary for power and torque. It delivers 470 horsepower and an industry-leading 975 lb-ft of torque-giving you the muscle to handle the toughest jobsites and heaviest loads.

The diesel also includes an integrated exhaust brake that enhances downhill control and reduces brake wear when towing. If you prefer gas, the standard 6.6L V8 pairs with a 10-speed automatic transmission for smooth, predictable power for daily hauling.

Both powertrains are engineered to work hard and perform with authority. To compare specs and find the right engine option for your needs, call Markquart Motors at (715) 833-0444 or stop by our Chippewa Falls location to discuss your work and lifestyle demands with our sales team.