---
id: what-kind-of-power-and-towing-capacity-does-the-gmc-sierra-hd-have
title: "What kind of power and towing capacity does the GMC Sierra HD have?"
category: faq
subtopic: sierra-hd-performance
page_type: faq
source_url: "https://www.markquartmotors.com/new-inventory/gmc/sierra-hd.htm"
tags: ["GMC", "Sierra HD", "engine", "towing", "performance"]
questions:
  - "How much horsepower does the Sierra HD have?"
  - "What is the towing capacity of the GMC Sierra HD?"
  - "Does the Sierra HD have a diesel option?"
  - "How much torque does the Sierra HD produce?"
related: [sierra-hd-trims, sierra-hd-overview]
dealer: Markquart Motors
---

The 2025 GMC Sierra HD delivers serious performance for heavy-duty work. The standard 6.6-liter V-8 gas engine produces 401 horsepower and 464 lb-ft of torque, with an available turbocharged diesel 6.6-liter V-8 option that delivers up to 470 horsepower and an impressive 975 lb-ft of torque.

With up to 22,500 pounds of towing capacity (and up to 36,000 lbs with available packages), the Sierra HD handles the toughest jobs. All models feature a 10-speed automatic transmission, advanced trailering technology, and multiple camera views including transparent trailer mode for confident towing.

To explore engine options and confirm current specifications for your needs, contact Markquart Motors at (715) 833-0444 or browse our inventory online.