---
id: what-are-the-key-performance-specs-of-the-2025-gmc-sierra-hd
title: "What are the key performance specs of the 2025 GMC Sierra HD?"
category: guide
subtopic: sierra-hd-performance
page_type: guide
source_url: "https://www.markquartmotors.com/new-inventory/gmc/sierra-hd.htm"
tags: ["performance", "engines", "towing", "horsepower", "torque"]
questions:
  - "How much can a GMC Sierra HD tow?"
  - "What engine options does the Sierra HD have?"
  - "What is the horsepower and torque of the Sierra HD?"
related: [sierra-hd-overview, sierra-hd-trims]
dealer: Markquart Motors
---

The 2025 GMC Sierra HD delivers impressive power for heavy-duty work. The standard 6.6-liter V-8 gas engine produces 401 horsepower and 464 lb-ft of torque. If you need even more muscle, the available diesel 6.6-liter V-8 pushes up to 470 horsepower and 975 lb-ft of torque.

Towing capacity reaches up to 36,000 lbs, making the Sierra HD one of the most capable pickups on the road. The 10-speed automatic transmission handles power delivery smoothly, while the best-in-class cargo bed delivers 83.5 cubic feet of storage.

These specs make the Sierra HD ideal for commercial use, farm work, or serious recreational towing. Stop by Markquart Motors or call (715) 833-0444 to discuss which trim and engine option fits your towing and hauling needs.