2021 GMC Yukon XL AT4
- Certified vehicle
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
- Auxilliary engine cooler
- Auxilliary transmission cooler
- 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
- Front Ventilated disc brakes
- Front and rear reading lights
- Front fog/driving lights
- Fuel Consumption: City: 15 mpg
- Fuel Consumption: Highway: 19 mpg
- GMC Infotainment System
- Heated driver mirror
- Heated passenger mirror
- Leather seat upholstery
- Leather steering wheel trim
- Machined aluminum rims w/ painted accents
- Memorized Settings for 2 drivers
- Memorized Settings including door mirror(s)
- Memorized Settings including steering wheel
- OnStar and GMC connected services capable
- Passenger Airbag
- Power Folding Third Row Seat
- 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 separate controls
- Rear heat ducts with separate controls
- Rear seats center armrest
- Rear spoiler: Lip
- Remote Engine Start : Keyfob remote start
- Remote power door locks
- Side airbag
- SiriusXM with 360L AM/FM/Satellite Radio
- SiriusXM with 360L Satellite Radio
- Speed Sensitive Audio Volume Control
- Split rear bench
- Stability controll with anti-roll
- Surround Audio
- Tachometer
- Tilt and telescopic steering wheel
- Total Number of Speakers: 9
- 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
Pragmatic buyers who prioritize reliability, durability, and long-term savings will find this SUV especially appealing. Designed for those who regularly face challenging weather or need spacious accommodations for family and gear, it offers features such as heated seats, remote start, and a power liftgate. In the Iowa region, its four-wheel drive system and adaptive suspension help ensure confident travel through all seasons, reducing the risk of costly repairs due to weather-related incidents.
The EcoTec3 5.3L V8 engine and 10-speed automatic with overdrive are well-regarded for their longevity and smooth performance. The 4WD drivetrain adds versatility for towing, hauling, or venturing off paved roads, while the adaptive and auto-leveling suspension enhances comfort and reduces wear on mechanical components. EPA ratings of 15 MPG city and 19 MPG highway indicate competitive efficiency for a full-size SUV, translating to fewer fuel stops and better control over operating costs for owners who value predictable expenses.
Safety is a cornerstone of this SUVâs value proposition, with an extensive suite of features such as Automatic Emergency Braking, Lane Keep Assist with Lane Departure Warning, Rear Cross Traffic Alert, and Trailer Side Blind Zone Alert. These systems work proactively to help prevent accidents, protecting both your investment and your passengers. The inclusion of rain-sensing wipers, a security system, and OnStar emergency communication further enhance peace of mind and reduce the likelihood of costly incidents over years of ownership.
Equipped with the AT4 Premium Plus Package, this Yukon XL comes furnished with perforated leather seating, heated and ventilated front seats, heated rear seats, a heated steering wheel, and a Bose 9-speaker audio system. The In-Vehicle Trailering App and integrated trailer brake controller simplify towing tasks, while Apple CarPlay and Android Auto support keep drivers connected. Features like tri-zone automatic climate control, power release second-row bucket seats, and adaptive magnetic ride control ensure both comfort and utility for busy families or those with active lifestyles.
Compared to segment alternatives such as the Ford Expedition and Chevrolet Suburban, the Yukon XL AT4 stands out for its blend of off-road capability, premium features, and strong resale value. While all three models offer robust V8 engines, this SUVâs suite of driver assistance technologies and its refined interior give it an edge for buyers seeking reliable long-term transportation with fewer ownership surprises. The solid powertrain reputation and competitive EPA ratings also help manage depreciation and operational costs.
What kind of fuel economy can owners expect? The SUV achieves an EPA-estimated 15 MPG city and 19 MPG highway. Is this model known for reliability? The Yukon XLâs V8 and 4WD systems have a strong record for dependable, long-term service.
Learn more about the 2021 GMC Yukon XL AT4 at Lynch Ford Chevrolet, located at 410 Business 30 Sw Mt Vernon, IA 52314. For additional details or to schedule a test drive, call 319-895-8500 and experience a high-value SUV designed for smart long-term ownership.
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
KBB.com Consumer Reviews
- 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.
