---
id: what-engine-options-come-with-the-2025-gmc-sierra-hd
title: "What engine options come with the 2025 GMC Sierra HD?"
category: faq
subtopic: sierra-hd-engines
page_type: faq
source_url: "https://www.markquartmotors.com/research/gmc/sierra-hd/trims.htm"
tags: ["GMC", "Sierra HD", "engines", "performance"]
questions:
  - "What engines are available on the Sierra HD?"
  - "How much horsepower does the Sierra HD have?"
  - "Can I get a diesel Sierra HD?"
related: [sierra-hd-trims, sierra-hd-pro, sierra-hd-denali]
dealer: Markquart Motors
---

The 2025 GMC Sierra HD gives you two impressive power options.

The standard engine is a 6.6-liter V8 gas engine with 401 horsepower and 464 lb-ft of torque-plenty of muscle for heavy hauling and towing. If you want even more power, the available 6.6-liter Duramax Turbo-Diesel V8 delivers 470 horsepower and a staggering 975 lb-ft of torque, ideal for serious workloads and challenging terrain.

Both engines pair with a heavy-duty 10-speed automatic transmission built for durability. Whether you choose gas or diesel depends on your hauling needs and preference-the team at Markquart Motors can help you find the right match. Call (715) 833-0444 or visit us in Chippewa Falls to discuss which engine works best for you.