2020 GMC Yukon XL SLT BIG on Space, Comfort & Adventure!
Need an SUV with room for the whole crew and everything they want to bring along? Meet the 2020 GMC Yukon XL SLT! This full-size SUV delivers serious road presence, a spacious cabin, premium comfort, and the versatility you need for family life, road trips, work, and weekend adventures.
Why Youll Love the Yukon XL SLT:
Full-size SUV with an extended XL body for maximum versatility
Plenty of room for passengers and family adventures
Massive cargo capacity for luggage, groceries, sports equipment, and more
Comfortable SLT interior with a premium feel
Strong SUV capability for road trips and everyday driving
Convenient technology and connectivity features
Smooth highway cruiser that's ready for long-distance travel
Big, bold GMC styling with serious road presence
Whether you're loading up the family for a road trip, heading to the lake, tackling the daily school run, or simply want maximum space and comfort, the 2020 GMC Yukon XL SLT is ready for the job.
The Yukon XL combines full-size SUV capability, spacious seating, impressive cargo room, premium comfort, and bold GMC styling into one seriously versatile package. If you need an SUV that can keep up with a busy lifestyle, this Yukon XL is ready to roll!
Searching for a 2020 GMC Yukon XL for sale, Yukon XL SLT, full-size SUV, 3-row SUV, family SUV, large luxury SUV, or road-trip-ready vehicle? This one deserves a closer look!
Big family? Big plans? Big road trips? No problem. The Yukon XL is built to bring everyone and everything along for the ride!
Recent Arrival!
Used 2020 GMCYukon XL SLT
- Exterior Color
- Satin Steel Metallic
- Interior Color
- (Interior color has lighter/darker two-tone effect
- Odometer
- 108,021 miles
- Fuel Economy
- 14/22 MPG City/Hwy
- Transmission
- Automatic
- Drivetrain
- RWD
- Engine
- Engine: 5.3L, V-8, SIDI, Active Fuel Mgt
- VIN
- 1GKS1GKC3LR241657
- Stock Number
- T878A
Included Packages & Accessories
Detailed Specifications
- Max seating capacity: 7
- Fuel System: Direct Injection
- Fuel tank capacity: 31 gal
- Horsepower: 355
Dealer Notes
KBB.com Consumer Reviews
- 5.0
Great overall family hauler!
By twitch on 9/20/2026 5:59:28 PM
Hello. A 23 year seasoned automotive repair professional here. Overall, this platform is very posh yet has that ‘truck toughness’, if and when you need it. Tows well and the rear locker certainly does its job, and is good at it. As well as the factory built in trailer brake. The MPG isn’t the greatest at 22 HWY/17 CITY (personal average) but you don’t buy this sort of vehicle for the fuel economy. It’s luxury, brawn, fit/finish and material durability don’t necessarily need ‘THE BEST LARGE SUV FUEL ECONOMY’ title. Leave that to the throw away over seas manufactures and other domestics that have made me a great living. 😉 Performance is above average. Very crisp and surprisingly quick acceleration for a vehicle of its size. (Coming from a previous owner of a 9 sec. 1/4 mile C6 Z06) The transmission is smooth with power delivery and with shifting. Like anything and any other vehicle, fluid maintenance is your friend here. Make sure the differentials, transfer case, engine coolant, brake fluid, trans filter and trans fluid drain and fills are done accordingly, like and when GM advises and you will see many miles, with no anxiety. Regular alignment checks are advised to keep those big 22” tires from shaving away at your wallet. I would recommend a fuel management disabler or a complete mechanical removal of it and switching out of the 0w20 oil, for longevity. 0w20 is not ideal for a big 6.2 V8 with the stresses it’s designed to take on. That’s where the ‘bad rep’ comes from. GM, like every auto manufacturer is required to have a mandatory average ‘MPG’ across the board, amongst all models. Thinner oil is part of what achieved that average with this truck for reasons unknown. I use Mobil 0w40 Supercar, ya know, the C8 ZR1/Z06 oil from the factory that flows and protects during a solid 12 hour race, at places like Sebring raceway? No real complaints from a Large 4WD Luxury SUV. (I’m referencing the 6.2 L86 V8, as that’s what I have) - 5.0
Excellent Quality SUV
By Joseph U on 1/16/2026 12:03:02 AM
My experience with the 2018 GMC Yukon Denali Sport, 6.2, is that it is an amazing machine! Zero Recalls! The powerful 6.2 gas engine is incredible. 5 stars all the way! - 5.0
Great truck
By Bob R on 11/20/2025 4:41:53 PM
With the 6.3 engine it has more power than I will ever need great modern leather! It has 120,0000 mile runs like a top we change the oil regularly and it rides as good as our Cadillac did! It probably needs shocks about now but this has been a great truck!
May not represent actual vehicle. (Options, colors, trim and body style may vary)