Reduced by $3,000 since May 05, 2026

2020 GMC Sierra 1500 AT4



  • $30,997 Ingersoll Price

  • Retail Price $30,000
    • $997
  • Internet Price $30,997
$493 /month
8.99% APR
72 months
  • Documentation Fee $997
  • Ingersoll Price $30,997
  • Down Payment $4,650
*Excludes tax, title & fees
Disclaimers Info Icon

Visit our Store

Vehicle Information

VIN: 3GTU9EET7LG377867
Stock #: T377867
Model Code: TK10543
  • Condition Used
  • Body Style Crew Cab
  • Exterior Color Onyx Black
  • Interior Color Jet Black With Kalahari Accents, Perforated Leather-Appointed Front Seat Trim
  • Mileage 108,319
  • Fuel Economy
    City/Highway 15/19 MPG
  • Engine Engine: 3.0L, DuraMax Turbo-Diesel, Inline 6 Cylinder
  • Transmission Automatic
  • Fuel Type Diesel Fuel

Highlighted Features

Feature availability subject to final vehicle configuration. Please reference window sticker for more info.

Dealer Comments

Discover the unparalleled capability and refined luxury of the 2020 GMC Sierra 1500 AT4. This rugged yet sophisticated pickup is engineered to conquer any terrain while delivering a premium driving experience.

Outfitted with a robust 3.0L Duramax Turbo Diesel engine and 4-wheel drive, the Sierra AT4 delivers impressive power and exceptional off-road performance. Key features include:

- Onyx Black exterior with Black accents
- Engine Block Heater
- AT4 Premium Package with LT275/65R18C MT blackwall Goodyear Wrangler DuraTrac tires and 6 Black rectangular assist steps

Beyond its impressive capabilities, this Sierra AT4 is packed with luxurious amenities to elevate your driving experience:

- Bose 7-speaker premium audio system
- Heated and ventilated front seats
- Heated rear outboard seats
- Power sunroof
- Wireless charging
- Rear Camera Mirror
- Head-up display

With its muscular stance, advanced technology, and premium cabin appointments, the 2020 GMC Sierra 1500 AT4 is a true masterpiece of automotive engineering. Experience the perfect blend of capability and refinement - visit our showroom today to take this exceptional truck for a test drive.

The Sierra AT4's impressive performance is matched by its refined interior, offering the ultimate in comfort and convenience. Sink into the plush, perforated leather-appointed seats and enjoy the convenience of dual-zone climate control, power-adjustable front seats with memory, and a heated steering wheel. The premium Bose audio system delivers concert-hall sound, while the 8-inch touchscreen infotainment system with built-in navigation and Apple CarPlay/Android Auto keeps you connected on the go.

Beyond its creature comforts, the Sierra AT4 is engineered to tackle the toughest terrain. The off-road-tuned suspension, locking rear differential, and Goodyear Wrangler DuraTrac tires provide exceptional grip and control, while features like Hill Descent Control and the in-vehicle trailering app make towing and off-road adventures a breeze. With the available 4G LTE Wi-Fi hotspot, you can stay connected even in the most remote locations.

Safety is also a top priority in the Sierra AT4, with a comprehensive suite of advanced driver assistance technologies. Enjoy the peace of mind of features like Automatic Emergency Braking, Lane Change Alert with Side Blind Zone Alert, and Rear Cross Traffic Alert, all designed to help you navigate the road with confidence.

Whether you're seeking a capable off-road companion or a refined daily driver, the 2020 GMC Sierra 1500 AT4 delivers uncompromising performance, technology, and luxury. Visit our showroom today to experience this exceptional truck for yourself and discover why the Sierra AT4 is the ultimate choice for those who demand the best.

This vehicle is being sold as Ingersoll Certified Pre-Owned. This program gives you piece of mind. You will receive. **A Vehicle Inspection and Reconditioning Form. **A Vehicle Carfax. **90 Days or 3000 miles of Powertrain Plus Limited Coverage **A Free Maintenance event including oil change and tire rotation within the first 12mo or 12,000 miles of driving (at an Ingersoll Automotive Location) This is not a manufacturer sponsored program.

Do not hesitate, call us now at 860.945.4755 to speak with our guest friendly product consultants to schedule your test drive.

Pre-Owned Vehicle Prices do not include government fees and taxes, any finance charges, $997 dealer documentation fees (Pawling Conveyance Fee capped at $175 per NY Law), any emissions testing fees or other fees. All prices, specifications and availability are subject to change without notice. The features and options listed are provided by a 3rd party organization and may not apply to this specific vehicle. Contact dealer for most current information. Not responsible for typographic errors.

Eligible Benefits

All Features

  • DriveType
    • DriveType: Four Wheel Drive
  • Fuel Economy
    • City: 15 MPG
    • Hwy: 19 MPG
    • Combined: 17 MPG
  • Fuel System
    • Fuel System: Direct Injection
  • Fuel Tank Capacity
    • Fuel Tank Capacity: 24 gal
  • Fuel Type
    • Fuel Type: Diesel Fuel
  • Horse Power
    • Horse Power: 277
  • Rear Wheel
    • Rear Wheel: Single
  • Trailering Capacity
    • Trailering Capacity: 0
Vehicles You Might Like

2023 GMC Sierra 1500 AT4

VIN: 1GTUUEE87PZ177927
Stock: T177927
Model: TK10743
  • Call for Pricing & Availability Ingersoll Price


2024 GMC Sierra 1500 Denali

VIN: 3GTUUGED1RG399097
Stock: A399097
Model: TK10543
  • Call for Pricing & Availability Ingersoll Price


2015 GMC Sierra 1500 SLT

VIN: 3GTU2VEC0FG199647
Stock: T199647
Model: TK15543
  • $25,997 Ingersoll Price


2020 Chevrolet Silverado 1500 RST

VIN: 3GCUYEED9LG177701
Stock: X177701
Model: CK10543
  • $29,997 Ingersoll Price


New, Pre-Owned, Certified Pre-Owned and Demo Vehicles Prices do not include additional fees and costs of closing, including government fees and taxes, any finance charges, $997 dealer documentation fees, any emissions testing fees or other fees. All prices, specifications and availability are subject to change without notice. Contact dealer for most current information. Not responsible for typographic errors. Onstar is not always included in the price of the vehicle. Please contact your representative with questions.

The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.