---
id: what-does-the-2025-gmc-sierra-1500-at4-offer
title: "What does the 2025 GMC Sierra 1500 AT4 offer?"
category: faq
subtopic: sierra-at4-trim
page_type: faq
source_url: "https://www.markquartmotors.com/research/gmc/sierra-1500/trim.htm"
tags: ["GMC", "Sierra 1500", "AT4 trim", "new vehicles", "off-road", "diesel"]
questions:
  - "What makes the AT4 an off-road truck?"
  - "Does the AT4 have a diesel engine?"
  - "What off-road features come with AT4?"
related: [sierra-trim-overview, sierra-slt-trim, sierra-denali-trim]
dealer: Markquart Motors
---

The AT4 is tailored for off-road adventurers, equipped with a 3.0L Duramax Turbo-Diesel engine and 10-speed automatic transmission for impressive torque and efficiency. It rides on aggressive 18" LT275/65R18C Goodyear Wrangler Territory mud-terrain tires with off-road-tuned suspension. An integrated trailer brake controller, Tailgate with EZ Lift assist, power lock, and release optimize off-road utility. Premium touches include a Bose Premium Sound System, heated rear outboard seats, and an available Head-Up Display. Rainsense automatic wipers handle changing weather. The AT4 balances rugged capability with refined comfort. Call Markquart Motors at (715) 833-0444 to explore AT4 options.