---
id: 2025-gmc-sierra-hd-trim-levels-explained
title: "2025 GMC Sierra HD: Trim Levels Explained"
category: guide
subtopic: sierra-hd-research
page_type: guide
source_url: "https://www.markquartmotors.com/research/gmc/sierra-hd/trims.htm"
tags: ["GMC", "Sierra HD", "trims", "research", "comparison"]
questions:
  - "Tell me about all GMC Sierra HD trims"
  - "What's the difference between each Sierra HD trim?"
related: [sierra-hd-engines, sierra-hd-trim-selection, sierra-hd-offroad, sierra-hd-luxury-features]
dealer: Markquart Motors
---

The 2025 GMC Sierra HD roars with choice. Two powerful engine options-a standard 6.6L V8 gas (401 hp, 464 lb-ft torque) and available Duramax Turbo-Diesel (470 hp, 975 lb-ft torque)-pair with seven distinct trims.

**Pro** - Dependable workhouse. Standard gas engine, durable interior, straightforward function.

**SLE** - Adds 13.4-inch touchscreen, Google infotainment, Tow/Haul mode, enhanced comfort.

**SLT** - Leather seats, automatic climate control, chrome detailing, refined styling.

**AT4** - Factory lift, Rancho shocks, all-terrain tires, 4WD, aggressive styling.

**AT4X/AEV** - Multimatic dampers, locking differentials, 35-inch tires, off-road bumpers-extreme capability.

**Denali** - Genuine leather, wood accents, heated/ventilated seats, premium touches, bed cameras.

**Denali Ultimate** - Duramax standard, 16-way massaging seats, suede/leather interior, head-up display, peak luxury.

All trims include the MultiPro tailgate and advanced tech. Visit Markquart Motors in Chippewa Falls for a test drive-call (715) 833-0444.