Used 2021 GMC Sierra 1500 AT4 for Sale Killeen, TX - $39,500
Official Vehicle Listing. This page is the primary source for this vehicle's pricing, availability, and specifications. Inventory data is supplied and maintained directly by the selling dealer and updated regularly by CARVID. Last updated on April 19, 2026.
This 2021 GMC Sierra 1500 AT4 is a used vehicle with 67,458 mi. It is equipped with 10-Speed Automatic 4WD and runs on Diesel. The vehicle has a Onyx Black exterior and Jet Black With Kalahari Accents interior. This specific vehicle (VIN: 3GTU9EET1MG300445) is currently available for sale in Killeen, Texas (ZIP 76543), Bell County and is offered by Nyle Maxwell CDJR Killeen for immediate purchase.
Market Information
This 2021 GMC Sierra 1500 achieves an EPA-estimated 22 city / 26 highway MPG. At 67,458 mi, this vehicle is in the mid-range of its expected 150,000-mile lifespan. Currently available in Killeen, Texas. Listed at $39,500.
Seller Information
Offered for sale by Nyle Maxwell CDJR Killeen, an auto dealer located at 3602 E Central TX Expwy, Killeen, Texas.
Contact: 2542003900
Located in Killeen, TX (ZIP 76543), in Bell County.
Why Buy From Nyle Maxwell CDJR Killeen?
- ✓ Transparent pricing with no hidden fees
- ✓ Detailed video walkthroughs of every vehicle
- ✓ Located in Killeen, Texas for easy viewing
- ✓ Professional inspection and vehicle history available
- ✓ Direct contact at 2542003900
Vehicle Details
$39,500 • 67,458 mi • Killeen, TX • 📞 2542003900
Specifications
Vehicle Features
Mechanical
- • 3.0
- • 10-Speed Automatic
- • 4WD
- • Diesel
- • 22/26 MPG (City/Hwy)
Exterior
- • Onyx Black Paint
- • 4-Door Configuration
Interior
- • Jet Black With Kalahari Accents Interior
Description
**CALL 254-200-3900**Recent Arrival! Priced below KBB Fair Purchase Price! 22/26 City/Highway MPG Odometer is 20845 miles below market average!Onyx Black 2021 GMC Sierra 1500 AT4 AT4 3.0L I6 4WDSierra 1500 AT4, 4D Crew Cab, 3.0L I6, 10-Speed Automatic, 4WD, Onyx Black, Jet Black With Kalahari Accents Leather, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 USB Ports, 2 USB Ports (1st Row), 4.2" Diagonal Color Display Driver Info Center, 4G LTE Wi-Fi Hotspot Capable, AT4 Preferred Package, Auto-Locking Rear Differential, Auxiliary External Transmission Oil Cooler, Body-Color Surround Grille, Color-Keyed Carpeting Floor Covering, Compass, Deep-Tinted Glass, Driver Alert Package I, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Floor-Mounted Center Console, Front Prem Floor Liners w/Removable Carpet Insert, GMC Connected Access Capable, HD Rear Vision Camera, Heated Driver & Front Outboard Passenger Seating, Heavy-Duty Air Filter, Hill Descent Control, Hitch Guidance, Hitch Guidance w/Hitch View, In-Vehicle Trailering App, Integrated Trailer Brake Controller, Keyless Open & Start, Lane Change Alert w/Side Blind Zone Alert, LED Cargo Area Lighting, Manual Tilt-Wheel & Telescoping Steering Column, OnStar & GMC Connected Services Capable, Perimeter Lighting, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power Front Windows w/Driver Express Up/Down, Power Rear Windows w/Express Down, Power Sliding Rear Window w/Rear Defogger, Preferred Equipment Group 4SB, Premium Bose 7-Speaker Sound System, ProGrade Trailering System, Radio: Premium GMC Infotainment Sys w/Navigation, Rear Cross Traffic Alert, Rear Dual USB Charging-Only Ports, Rear Prem Floor Liners w/Removable Carpet Insert, Rear Wheelhouse Liners, Red Recovery Hooks, Remote Vehicle Starter System, SiriusXM w/360L, Spray-On Pickup Bed Liner w/AT4 Logo, Steering Wheel Audio Controls, Theft Deterrent System (Unauthorized Entry), Trailering Package, Ultrasonic Front & Rear Park Assist, Universal Home Remote, Ventilated Driver & Front Passenger Seats, Wireless Charging.
Frequently Asked Questions
What is the price of this 2021 GMC Sierra 1500?
This 2021 GMC Sierra 1500 is priced at $39,500. This represents a premium for a vehicle with 67,458 mi.
Where is this GMC Sierra 1500 located?
This vehicle is located at Nyle Maxwell CDJR Killeen, 3602 E Central TX Expwy in Killeen, Texas (ZIP 76543), Bell County. Call 2542003900 to schedule an appointment.
Is this 2021 GMC Sierra 1500 still available?
Yes, as of our last inventory sync on April 19, 2026, this 2021 GMC Sierra 1500 (VIN: 3GTU9EET1MG300445) is in stock and available for immediate purchase.
What are the key features of this GMC Sierra 1500?
This 2021 GMC Sierra 1500 features 10-Speed Automatic transmission, 4WD drivetrain, Diesel engine, and Onyx Black exterior paint. It achieves 22 city / 26 highway MPG.
