Used 2021 Gmc Sierra 1500 AT4

 51,103 miles
 Diesel
 Glendive, MT

$45,500

AI Analysis:

$40,232 average market price. 

View Full Analysis.

Key Features

Mileage

51,103 miles

Drivetrain

4WD

Engine

3L I6 DOHC Turbo

Transmission

Automatic

Fuel Type

Diesel

MPG

22 / 26

Color

Cayenne Red Tintcoat / Jet Black With Kalahari Accents

Title

Clean

VIN

3GTU9EET9MG448505

Contact Seller

HK

HKT Big Sky Motors

2515 W Towne St

Glendive, MT 59330

Financing Available

Pre-qualification takes just minutes. Compare multiple offers and save!

$770 / month

  • Rates as low as 4.09% APR

  • Browse multiple offers

  • Same-day approval

Powered by MyAutoLoan.

Curious what you can afford?

Avoid dealer markup and get straight to driving. Compare rates from multiple lenders instantly to ensure you’re getting the best deal possible.

Dealer Description

This Cayenne Red Tintcoat 2021 GMC Sierra 1500 AT4 Diesel 4x4 is a bold, highly capable truck that blends rugged off-road performance with premium comfort, making it an outstanding choice for drivers who demand strength, technology, and refinement in one package. The Duramax diesel engine delivers impressive torque and efficiency, giving you confident power for towing, hauling, and long highway drives. Paired with the AT4 4x4 system and off-road suspension, this Sierra is built to handle rough terrain, back roads, and challenging weather conditions across Eastern Montana and North Dakota. Inside, the Jet Black leather interior with Kalahari accents creates a distinctive, upscale cabin that’s both comfortable and functional. Heated and cooled front seats keep you comfortable in every season, while navigation and intuitive technology make every drive easier and more connected. Remote start adds everyday convenience, allowing you to warm up or cool down the truck before you even climb in. Equipped with the trailering package, this Sierra is ready to work as hard as you do, offering added confidence and control when towing boats, campers, or equipment. Combined with the off-road package, this truck delivers versatility that performs just as well on the jobsite as it does on weekend adventures. The Cayenne Red Tintcoat exterior and aggressive AT4 styling give it a commanding presence that stands out wherever it goes. At HKT Big Sky Motors, you’ll enjoy a small-town, no-hassle buying experience that puts your needs first. We’ve been locally owned since 1956 and proudly serve customers throughout Eastern Montana and North Dakota. Stop by and see us at 2515 W Towne Street in Glendive, MT, give us a call at (406) 377-3350, or reach out by text at (406) 939-4301 to learn more about this 2021 GMC Sierra 1500 AT4 Diesel 4x4 and schedule your test drive today.

Features & Options

  • Trailering Package
  • Off-Road Package
  • AT4 Suspension
  • Heated and Cooled Front Seats
  • Navigation System
  • Remote Start
  • Premium Front Floor Liners
  • Rear Air Vents
  • Power Windows
  • Power Door Locks
  • Keyless Open and Start
  • Apple CarPlay capability
  • Android Auto capability
  • Bluetooth capability
  • HD Radio capability
  • Wi-Fi Hotspot capable
  • LED Daytime Running Lamps
  • LED signature tail lamps
  • LED fog lamps
  • GMC MultiPro Tailgate
  • Spray-on bedliner

Vehicle History Report

VIN: 3GTU9EET9MG448505

Check this vehicle's history for accidents, service records, ownership, and more.

Seller Details

Listed 1/29/2026

View original listing
HK

HKT Big Sky Motors

2515 W Towne St

Glendive, MT 59330

Phone

406-359-**** Show number

Location

Contact Seller

HK

HKT Big Sky Motors

2515 W Towne St

Glendive, MT 59330

Financing Available

Pre-qualification takes just minutes. Compare multiple offers and save!

$770 / month

  • Rates as low as 4.09% APR

  • Browse multiple offers

  • Same-day approval

Powered by MyAutoLoan.

Explore More Options