Used 2020 Gmc Sierra 2500 HD AT4

$38,999

Financing as low as $637 per month.

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Key Features

Mileage

159,028

Drivetrain

4WD

Engine

6.6L V8 Turbo

Transmission

6 Speed

Fuel Type

Diesel

MPG

N/A

Color

Onyx Black / Jet Black With Kalahari Accents

Title

Clean

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Schwan Cadillac

3812 Memorial Highway

Mandan, ND 58554

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Dealer Description

Heavy Duty Powerhouse: Black 2020 GMC Sierra 2500 HD AT4 Diesel Own the road and the jobsite with this rugged, low mileage for the year, Black 2020 GMC Sierra 2500 HD AT4. This highly desirable offroad trim combines massive towing capability with premium features and a commanding presence. Mileage: 159,028 miles Engine: Legendary 6.6L Duramax Turbo Diesel V8 engine producing immense torque, paired with the robust Allison 10 speed Automatic Transmission. Drivetrain: Heavy Duty Four Wheel Drive (4WD) for maximum traction and capability. Color: Deep, aggressive Black exterior. AT4 Trim and Diesel Performance Highlights: Offroad Ready: Equipped with an Offroad Suspension Package, Rancho shocks, and skid plates to handle tough terrain. Duramax Power: The Duramax diesel engine delivers exceptional towing capacity and efficiency, making light work of any load. Premium Interior: The AT4 cabin features Kalahari accents on perforated leather appointed seating, with heated and ventilated front seats and heated rear outboard seats. Advanced Trailering: Features include the ProGrade Trailering System with in vehicle trailering app and up to 15 camera views (if equipped). Distinctive Look: Stands out with the AT4 unique grille, darkened exterior accents, and Red vertical recovery hooks. This 2020 GMC Sierra 2500 HD AT4 Diesel is an exceptionally capable truck ready to tackle heavy hauling, challenging trails, and provide comfortable daily driving. Do not miss this opportunity for serious power.

Features & Options

  • Bluetooth
  • Remote Start
  • 4WD/AWD
  • Android Auto
  • Apple CarPlay
  • Keyless Entry
  • Wi-Fi Hotspot
  • Automatic High Beams
  • Emergency Brake Assist
  • Lane Departure Warning
  • Wireless Phone Charging
  • Blind Spot Monitor
  • Forward Collision Warning
  • Navigation System
  • Parking Assistance
  • Rear View Camera
  • Automatic Climate Control
  • Turbo Charged Engine
  • Cruise Control
  • Premium Sound System

Vehicle History Report

VIN: 1GT49PEY0LF134071

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Seller Details

Listed 11/14/2025

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Schwan Cadillac

3812 Memorial Highway

Mandan, ND 58554

Phone

701-297-2318

Location

Contact Seller

Sc

Schwan Cadillac

3812 Memorial Highway

Mandan, ND 58554

By submitting this form, you agree to be contacted by the seller.

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