2021 GMC Yukon XL Denali

  • Used
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    The overview

    Exterior Color
    White Frost Tricoat
    Interior Color
    (1st and 2nd rows only.)
    Odometer
    79,093 miles
    Fuel Economy
    13/19 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    Engine: 6.2L, EcoTec3 V-8, DI, Dynamic Fuel Mgt, V V T
    VIN
    1GKS2JKL9MR153871
    Stock Number
    S153871
      • Max seating capacity: 7
      • Fuel System: Direct Injection
      • Fuel tank capacity: 28 gal
      • Horsepower: - TBD -




      This 2021 GMC Yukon XL Denali 4WD is equipped with a powerful 6.2L Ecotec3 V8 engine, delivering strong performance and capability for any drive. Its Denali trim emphasizes luxury and advanced technology, complementing the spacious XL body style designed for maximum comfort and versatility. Safety is a priority with essential features such as Forward Collision Alert, Automatic Emergency Braking, and Front Pedestrian Braking, which work together to help prevent accidents. Lane Keep Assist with Lane Departure Warning further enhances driver confidence, while a 15-inch diagonal multi-color Head-Up Display projects important information within your line of sight. The rear camera adds additional visibility when backing up. Comfort and convenience come standard with heated and ventilated front seats, heated second-row outboard seating, and a heated, automatic steering wheel. The hands-free power programmable rear liftgate adds effortless access to the cargo area. Entertainment features include a large touchscreen primary display paired with Bose speakers and Bluetooth wireless audio streaming. Voice-activated audio controls and external memory support through the GMC Infotainment System allow for seamless connectivity and ease of use during your travels. This Yukon XL Denali balances luxury, technology, and safety to provide a refined driving experience suitable for families and individuals seeking a capable full-size SUV.


      KBB.com Consumer Reviews

      Kelley Blue Book Logo3.6out of 5 overall
      • 5.0

        Excellent Machine, Safety Features are Excessive

        by BenInKentucky on 7/14/2026 10:14:58 PM

        First, get the diesel. This is our 3rd diesel Yukon and they are amazing. Great mileage, great resale value, plenty of horse power, and the range for one tank of fuel can be very convenient on long road trips. The extra room in the XL model is also convenient for luggage if you have a large family and enjoy the ability to see out the back windows. The 10 speed transmission is smooth and it will glide down the interstate at any speed with ease at very low engine RPM. The only real downside to this vehicle are the overbearing safety features. If I look over at the navigation screen it vibrates the seat and tells me I am distracted. The auto-cruise (self-driving) feature will randomly hit the breaks in the middle of the highway. The backup camera will slam on the breaks if it sees any movement behind the vehicle even if it is way out of range. The back hatch opens automatically if you walk past it with the key in your pocket. If I lean too far on to the center console it will vibrate the seat and tell me I am distracted. We use this vehicle on the farm and there is no way to disable the seat belt alarm. We spent about an hour going through all of the settings and were able to disable most of the annoying features. I find putting a business card in front of the camera that looks at my face cures many of these frustrations and I may opt for a more permanent piece of black electrical tape that will blend in seamlessly. The auto stop feature is also frustrating but like the EPA gas cans I believe most of America is dealing with this frustration and it is not limited to this vehicle. Overall, we love the vehicle and will buy another one.…
      • 5.0

        No Problems Yet

        by CoachTroy72 on 6/17/2026 11:26:04 PM

        I got my 26 Yukon Denali SUV with 3 miles on it. Got to 308 and had engine knock. Took it to Classic GMC, they had it a week. Flushed out the engine debris, no knocking. Also they changed the oil. Not from 0-20w to 40w, but just changed it with the same OEM AC Delco standard Dexos, no more knocking. Now at 1238 miles havent had any issues. Actually getting 22.3 MPG! For a truck that is 17 city 20 Hwy..…
      • 5.0

        Love everything about my Elevation, except…

        by Carol Ann on 6/3/2026 5:57:12 PM

        This truck has excellent get up and go power, great traction control and steering, with an impressive turning radius, love the large dash display screen, sleek design inside and out, and the suspension makes for comfortable long highway and city driving. Surrounded in cool luxury, state of the art sound system while feeling like a VIP in my classy black FBI looking whip.…
      All reviews on KBB.com
      Based on 22 consumer ratings for 2021–2026 models. Privacy
        Tax, title, license and dealer fees (unless itemized above) are extra. Not available with special finance or lease offers.
        MPG estimates on this website are EPA estimates; your actual mileage may vary. For used vehicles, MPG estimates are EPA estimates for the vehicle when it was new. The EPA periodically modifies its MPG calculation methodology; all MPG estimates are based on the methodology in effect when the vehicles were new (please see the Fuel Economy portion of the EPAs website for details, including a MPG recalculation tool).