2021 GMC Yukon XL Denali
- Used
Finance Terms
Mark Allen Buick GMC
Call 918-779-3679
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The overview
- Exterior Color
- Onyx Black
- Interior Color
- (1st and 2nd rows only.)
- Odometer
- 119,386 miles
- Fuel Economy
- 13/19 MPG City/Hwy
- Transmission
- Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GKS2JKL9MR334369
- Stock Number
- TR467487A
The full specifications
- Max seating capacity: 7
- Fuel System: Direct Injection
- Fuel tank capacity: 28 gal
- Horsepower: - TBD -
Notes from the dealer
Mark Allen Buick GMC is excited to offer this wonderful 2021 GMC Yukon XL in Onyx Black This vehicle has passed our comprehensive inspection and comes with the following features;2021 GMC Yukon XLOnyx Black4WD.Visit Our Team at Mark Allen Buick GMC To Get Started! Just 15 minutes north of Tulsa, near Collinsville, Skiatook Owasso & Oolagah. When you stop by our showroom, you'll get to speak with our team of professionals who are ready to guide you through every aspect of buying or owning a Buick, GMC model. Now that you know everything that we can do for you, come in and speak with us about what you need for your Buick Envision, Enclave, GMC Sierra 1500, Savana Cutaway 3500 and Acadia. Call 918-446-9696 or visit us at www.markallen-buick-gmc.com.
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Peace of mind
Optional add-on protection
- GAP Protection
- Lifetime Powertrain
- Tires and Wheels
- Paint Protection
A name you can trust
Mark Allen Buick GMC is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
More about usKBB.com Consumer Reviews
3.6out 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.
Price does not include dealer documentation fee of $489, sales tax, registration, and dealer installed accessories. Online price valid for in-stock vehicles with an assigned stock number only. All prices, specification and availability subject to change without notice. Prices available for retail purchase only. Terms and conditions may vary based on credit score and status. See dealer for details. New cars only- must have trade-in vehicle year 1999 or newer and finance with dealer to qualify for online prices. Savings include dealership discount and all manufacturer incentives. Online price cannot be combined with special finance, lease, or other offers.
EPA Estimates Only.
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).
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).