2021 GMC Sierra 1500 AT4
Diesel, One Owner, Clean History, Loaded with Off-Road Capability
$37,990
 Drivetrain |
4WD |
 Transmission |
10-Speed Shiftable Automatic |
 Engine |
6cyl - 3.0L |
 Fuel Type |
Diesel |
 MPG City |
22 |
 MPG Highway |
26 |
 Interior |
Jet Black w/Kalahari Accents |
 Exterior |
Cayenne Red Tintcoat |
2021 GMC Sierra 1500 AT4 4WD – Diesel, One Owner, Clean History, Loaded with Off-Road Capability
Now Available: 2021 GMC Sierra 1500 AT4 Crew Cab | 3.0L Duramax Diesel | 4WD | Clean CARFAX | Premium Off-Road Package
A rare blend of diesel torque, off-road engineering, and luxury refinement, this Sierra AT4 is a one-owner, accident-free truck with a strong service history. Equipped with the 3.0L Duramax Turbo-Diesel, factory off-road suspension, skid plates, remote start, and multi-function tailgate, it's ready for work, the mountains, or your daily drive.
Vehicle Details
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VIN: 1GTU9EETXMZ401886
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Stock Number: 7115
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Mileage: 89,735 miles
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Engine: 3.0L I6 Duramax Turbo Diesel
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Transmission: 10-Speed Automatic
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Drivetrain: Four-Wheel Drive (4x4)
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Body Style: Crew Cab Short Box
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Fuel Economy: 22 MPG city / 26 MPG highway (EPA est.)
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Exterior Color: Summit White
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Interior: Jet Black w/Kalahari Accents (Leather)
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Original MSRP: $65,405
Notable Equipment and Features
AT4 Preferred Equipment Group – $9,495 Package Includes:
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AT4-specific off-road suspension with Rancho shocks
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Hill Descent Control
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Skid plates
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Spray-on bedliner with AT4 logo
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2-speed Autotrac transfer case
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High-capacity air filter
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Recovery hooks, 18" aluminum wheels with all-terrain tires
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10-way power front seats with ventilation and heating
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Heated rear seats and heated steering wheel
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Remote start, wireless phone projection
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Dual-zone climate control
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120V outlets (interior and cargo bed)
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GMC Premium Infotainment with 8” touchscreen
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Apple CarPlay and Android Auto
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Rear camera mirror and HD surround vision
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Bed View Camera with LED cargo lighting
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Bose Premium Audio System
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GMC MultiPro Tailgate
Options and Upgrades:
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3.0L Duramax Diesel Engine ($995)
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Off-Road Assist Steps ($995)
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20” Machined Aluminum Wheels ($1,100)
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Technology Package: Head-Up Display, Rear Camera Mirror ($1,875)
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Safety Package: Lane Change Alert, Rear Cross-Traffic Alert, Front/Rear Park Assist ($890)
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Power Sunroof ($995)
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Trailer Brake Controller and ProGrade Trailering System
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Bed View Camera and LED cargo bed lighting
Ownership and History
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1-Owner vehicle from Colorado
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No accidents or damage reported
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11 service history records
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Recently serviced (Feb 2025): brake fluid flush, rear brake service, wheel bearing service
Open recall present (Transmission control module software for diesel models – rear wheel lock-up risk; remedy available)
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Disclosure: This vehicle description has been generated using AI based on available documentation such as the original window sticker and vehicle history report. Please contact us directly to confirm specific vehicle features, options, and current condition.
