---
id: what-engine-options-are-available-in-the-new-gmc-sierra-hd
title: "What engine options are available in the new GMC Sierra HD?"
category: faq
subtopic: sierra-hd-engines
page_type: faq
source_url: "https://www.markquartmotors.com/new-inventory/gmc/sierra-hd.htm"
tags: ["GMC", "Sierra HD", "engines", "performance", "diesel"]
questions:
  - "What engines does the Sierra HD have?"
  - "Is there a diesel option for the Sierra HD?"
  - "How much horsepower does the Sierra HD have?"
related: [sierra-hd-towing, sierra-hd-trims]
dealer: Markquart Motors
---

The 2025 GMC Sierra HD offers impressive engine choices to match your needs. The standard 6.6-liter V-8 gas engine delivers 401 horsepower and 464 lb-ft of torque, paired with a smooth 10-speed automatic transmission. For maximum power, the available diesel 6.6-liter V-8 engine produces up to 470 horsepower and a commanding 975 lb-ft of torque.

Both engines are engineered for the toughest jobs, whether you're towing, hauling, or tackling demanding work. Markquart Motors has new Sierra HD models in stock with these engine options. To discuss which powertrain fits your lifestyle and budget, call (715) 833-0444 or visit us in Chippewa Falls, WI.