Reduced by $3,275 since Apr 28, 2026

2021 GMC Sierra 1500 AT4



  • $40,644 BEST PRICE

  • Retail Price $39,744
    • +899.95
  • Best Price $40,644

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Vehicle Information

VIN: 3GTP9EEDXMG247668
Stock #: T261653B2
Model Code: TK10543
  • Condition Used
  • Body Style Crew Cab
  • Exterior Color Onyx Black
  • Interior Color Jet Black With Kalahari Accents, Perforated Leather Front Seat Trim
  • Mileage 69,969
  • Fuel Economy
    City/Highway 14/19 MPG
  • Engine Engine: 5.3L, EcoTec3 V-8, DI, Dynamic Fuel Mgt, V V T
  • Transmission Automatic
  • Fuel Type Gasoline Fuel

Highlighted Features

Feature availability subject to final vehicle configuration. Please reference window sticker for more info.
  • Bluetooth®
  • 4WD/AWD
  • Android Auto
  • Apple CarPlay
  • Leather Seats
  • Cruise Control

Dealer Comments

Discover the rugged power and refined style of the 2021 GMC Sierra 1500 AT4. This capable off-road-focused truck is built to conquer any terrain, while delivering the premium comfort and technology you expect from a GMC.

Boasting a striking Onyx Black exterior with bold 20-inch machined aluminum wheels, the Sierra AT4 makes a commanding presence on the road. Under the hood, the potent 5.3L EcoTec3 V8 engine paired with a smooth-shifting 10-speed automatic transmission delivers impressive 4WD capability and efficiency, with an EPA-estimated 16 city/21 highway MPG.

- Onyx Black exterior with 20-inch machined aluminum wheels with carbon grey metallic accents
- Spray-on bedliner with AT4 logo
- Off-road suspension and skid plates
- Heated and ventilated front seats
- Heated steering wheel
- Bose premium audio system

The Sierra AT4 is engineered to take you further, with advanced off-road features like hill descent control, an auto-locking rear differential, and the ProGrade Trailering System to simplify towing. Inside, the premium cabin pampers you with heated and ventilated front seats, a heated steering wheel, and the latest GMC Infotainment technology with wireless Apple CarPlay and Android Auto.

Whether conquering rugged terrain or navigating the daily commute, the 2021 GMC Sierra 1500 AT4 delivers the perfect blend of capability, comfort, and style. Experience the difference for yourself - schedule a test drive today and discover why the Sierra AT4 is the ultimate off-road-ready truck.

With its powerful engine, advanced 4WD system, and premium interior amenities, the Sierra AT4 is the perfect companion for your next adventure. Imagine the possibilities behind the wheel of this exceptional truck. Visit our showroom to explore the Sierra AT4 and see how it can elevate your driving experience.

Eligible Benefits

All Features

  • DriveType
    • DriveType: Four Wheel Drive
  • Fuel Economy
    • City: 14 MPG
    • Hwy: 19 MPG
    • Combined: 16 MPG
  • Fuel System
    • Fuel System: Direct Injection
  • Fuel Tank Capacity
    • Fuel Tank Capacity: 24 gal
  • Fuel Type
    • Fuel Type: Gasoline Fuel
  • Horse Power
    • Horse Power: 355
  • Rear Wheel
    • Rear Wheel: Single
  • Trailering Capacity
    • Trailering Capacity: 0
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Tax, title, license and dealer fees & adds (unless itemized above) are extra. Not available with special finance or lease offers. Pricing includes a $750 financing incentive and is subject to availability, location, inventory, and other factors. Published price subject to change without notice to correct errors or omissions. While every effort has been made to ensure display of accurate data, the vehicle listings within this website may not reflect all accurate vehicle items, accessories and color may vary. The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets the final price.

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