2021 GMC Sierra 1500 Denali

  • Used
  • Diesel
$399Doc Fee
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Red Rock Chevrolet GMC, LLC
Location Details
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    The overview

    Exterior Color
    Onyx Black
    Interior Color
    JET BLACK, FORGE PERFORATED LEATHER SEAT TRIM
    Odometer
    144,286 miles
    Fuel Economy
    15/20 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    Engine: Duramax 3.0L, Turbo-Diesel, Inline 6 Cylinder
    VIN
    1GTU9FET5MZ281050
    Stock Number
    40999B

      A closer look at what’s included

      Base model features & specs only
      • Max seating capacity: 5
      • Fuel System: Direct Injection
      • Fuel tank capacity: 24 gal
      • Horsepower: 277
      This 2021 GMC Sierra 1500 Denali in striking black represents a premium full-size truck built to deliver capability and refined comfort. Powered by a turbocharged 3.0L diesel I-6 engine with a 10-speed automatic transmission, this 4WD crew cab combines efficiency with serious towing performance. With an EPA-estimated 22 city / 26 highway MPG, actual mileage may vary. The Jet Black leather interior and Denali Ultimate Package establish this truck as a luxury workhorse designed for buyers who refuse to compromise on quality or features.

      - Turbocharged 3.0L Diesel Engine with Engine Block Heater
      - Denali Ultimate Package with Signature Grille and Spray-On Bed Liner
      - Premium Bose 7-Speaker Sound System with Navigation
      - Heated and Ventilated Front Seats with 10-Way Power Driver Adjustment
      - Apple CarPlay and Android Auto Integration
      - GMC MultiPro Power Steps and Chrome Recovery Hooks
      - ProGrade Trailering System with Integrated Trailer Brake Controller
      - Adaptive Ride Control Suspension with Hill Descent Control
      - HD Surround Vision with Rear Camera Mirror and Bed View Camera
      - Automatic Emergency Braking and Lane Keep Assist

      The Denali's technology suite keeps you connected and in control, featuring a 15-inch head-up display, 4G LTE Wi-Fi hotspot capability, and OnStar Connected Services. A full complement of driver assistance features including adaptive cruise control, forward collision alert, and rear cross-traffic alert ensures confident driving in any condition. Come experience the perfect blend of luxury, capability, and advanced safety this Sierra Denali awaits your test drive.

      KBB.com Consumer Reviews

      Kelley Blue Book Logo4.0out of 5 overall
      • 4.0

        Depreciation of 50%

        by Manny A on 10/28/2026 10:06:36 AM

        This is a amazing truck.. Comfortable lots of sensors Etc…. My truck has 30000 miles I when to trade in they offer $46000 I paid $86000 the depreciation is incredible I don’t buy new truck never again.…
      • 5.0

        2021 GMC SLT 4WD SIERRA, Great Truck

        by Ransom1 on 10/15/2026 4:18:42 PM

        This is my 8th truck. This is hands down the very best truck I’ve ever owned. Not only is it the best looking truck on the road I have never had it in the shop except for oil changes and scheduled maintenance. The silver does not show dirt or grime.…
      • 5.0

        Great 4 cylinder truck

        by Steve on 9/23/2026 2:01:15 AM

        I have only pulled a trailer one time and still got 18 mpg down doing 80 down the interstate. Otherwise this vehicle is used for commuting or recreating. I typically get 22-24 mpg driving MT highways to the mountains. The turbo has some spunk for getting up to speed and the five years I've had my truck no complaints.…
      All reviews on KBB.com
      Based on 71 consumer ratings for 2019–2026 models. Privacy

        * The advertised price does not include sales tax, vehicle registration fees, other fees required by law, finance charges and any documentation charges. A negotiable administration fee, up to $115, may be added to the price of the vehicle.

        * Images, prices, and options shown, including vehicle color, trim, options, pricing and other specifications are subject to availability, incentive offerings, current pricing and credit worthiness.