This 2021 GMC Yukon XL Denali combines premium capability with refined luxury. With the powerful EcoTec3 6.2L V8 engine and 10-speed automatic transmission, this three-row SUV delivers commanding performance. The Denali trim brings meticulous attention to detail, from the striking white exterior to the sophisticated Teak and Light Shale perforated leather interior.
- Bose 14-Speaker Surround Sound with CenterPoint and SiriusXM 360L
- Hands-Free Power Programmable Rear Liftgate and Power Liftgate
- 15" Diagonal Multi-Color Head-Up Display
- Heated and Ventilated Driver and Front Passenger Seats plus Heated 2nd Row Outboard Seats
- Dual-Pane Panoramic Power Sunroof
- Adaptive Cruise Control with Enhanced Automatic Emergency Braking
- Advanced Navigation System with Apple CarPlay and Android Auto
- 3rd Row 60/40 Power-Folding Split-Bench Seat
- MAX Trailering Package with Integrated Trailer Brake Controller
- 22" Bright Machined Aluminum Wheels with All-Weather Floor Liners
This Yukon XL rides on an advanced adaptive suspension system and boasts premium safety tech including HD Surround Vision, Lane Keep Assist with Lane Departure Warning, and Rear Pedestrian Alert. Every control point reflects the Denali's commitment to commanding presence and passenger comfort, whether you're navigating city streets or heading off the highway. Come experience this exceptional three-row SUV and discover why the Yukon XL Denali remains a standout choice for those who demand both luxury and capability.
2021 GMC Yukon XL Denali
- Used
The overview
- Exterior Color
- White Frost Tricoat
- Interior Color
- Teak/Light Shale
- Odometer
- 146,516 miles
- Transmission
- 10-Speed Automatic with Overdrive
- Drivetrain
- 4WD
- Engine
- EcoTec3 6.2L V8
- VIN
- 1GKS2JKL5MR135741
- Stock Number
- 278021A
The full specifications
- 1st, 2nd and 3rd row head airbags
- 4-wheel ABS Brakes
- 60-40 Third Row Seat
- ABS and Driveline Traction Control
- Anti-theft alarm system
- Audio System Premium Brand Speakers: Bose
- Audio controls on steering wheel
- Auxiliary Engine Cooler : Yes
- Auxiliary Transmission Cooler : Yes
- Bluetooth wireless phone connectivity
- Braking Assist
- Bucket front seats
- Climate Controlled : Driver and passenger heated
- Compass
- Cruise control
- Cruise controls on steering wheel
- Daytime running lights
- Driver seat memory
- Driver's side electrochromatic auto-dimming mirrors
- Dual illuminated vanity mirrors
- Dual reverse tilt mirrors
- Electrochromatic rearview mirror
- External temperature display
- Folding : Power fold-into-floor
- Front Ventilated disc brakes
- Front and rear reading lights
- Front fog/driving lights
- Fuel Consumption: City: 14 mpg
- Fuel Consumption: Highway: 19 mpg
- GMC Infotainment System
- Heated driver mirror
- Heated passenger mirror
- Integrated Navigation System : with voice activation
- Leather seat upholstery
- Leather steering wheel trim
- Memorized Settings for 2 drivers
- Memorized Settings including door mirror(s)
- Memorized Settings including steering wheel
- OnStar and GMC connected services capable
- Passenger Airbag
- Polished aluminum rims
- Power liftgate
- Power remote w/tilt down driver mirror adjustment
- Power remote w/tilt down passenger mirror adjustment
- Power retractable mirrors
- Power windows
- Privacy glass: Deep
- Proximity remote trunk release
- Rear Air Conditioning : with rear controls
- Rear Heat : with rear controls
- Rear buckets
- Rear spoiler: Lip
- Remote Engine Start : Keyfob remote start
- Remote power door locks
- Running Boards : Fixed
- Side airbag
- SiriusXM with 360L AM/FM/Satellite Radio
- SiriusXM with 360L Satellite Radio
- Speed Sensitive Audio Volume Control
- Stability controll with anti-roll
- Surround Audio
- Tachometer
- Total Number of Speakers: 14
- Trailer hitch
- Trip computer
- Tumble forward rear seats
- Turn signal in mirrors
- Video Monitor Location: Front
- Wheel Diameter: 20
- Wheel Width: 9
Notes from the dealer
Peace of mind
Vehicle history report
- Title information
- Odometer readings
- Accident data (if applicable)
- Service history
- Vehicle usage
- Recall information (if applicable)
- Warranty status
A name you can trust
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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.