If you're in the market for a full-size luxury SUV that delivers serious power without sacrificing refinement, this 2015 GMC Yukon XL Denali for sale at Pristine Cars & Trucks in Marietta, GA is worth a very close look. With 77,325 miles, a commanding 6.2L V8 under the hood, and the top-tier Denali trim that puts it in a class of its own, this is the kind of vehicle that checks every box for growing families, road warriors, and luxury SUV enthusiasts across Cobb County and the greater Atlanta metro.About This 2015 GMC Yukon XL Denali The Yukon XL Denali is the flagship of GMC's full-size SUV lineup, and this 2015 example represents excellent value at 77,325 miles a very reasonable figure for a vehicle of this age and capability. The XL body means you get the stretched wheelbase and maximum passenger and cargo space that the standard Yukon simply can't match. Whether you're hauling the whole family across town or loading up for a weekend getaway from Marietta, the sheer practicality of this truck-based SUV is hard to beat. At this mileage, this Yukon XL Denali still has plenty of life ahead of it.2015 GMC Yukon XL Denali Performance and Engine6.2L EcoTec3 V8 Built for More Under the hood sits GMC's 6.2L EcoTec3 V8 the largest and most powerful engine available in the Yukon XL lineup. This flexible-fuel capable engine produces 420 horsepower and 460 lb-ft of torque in its standard configuration, making it one of the most potent powerplants in the full-size SUV segment. Paired with a heavy-duty 6-speed automatic transmission, power delivery is smooth, confident, and immediate.The EcoTec3 engine also benefits from cylinder deactivation technology, which allows it to seamlessly run on four cylinders during light-load highway driving, improving fuel efficiency without you ever noticing a change in performance. The AWD drivetrain gives you added confidence in wet Georgia weather or on slick roads, distributing power intelligently across all four wheels when conditions demand it.GMC Yukon XL Denali Features and InteriorThe Denali Difference Denali isn't just a badge it's a complete package that separates this Yukon XL from every trim below it. The 2015 Yukon XL Denali comes loaded with premium features that make every drive feel more upscale. Expect to find genuine leather seating surfaces, heated and ventilated front seats, a heated steering wheel, and tri-zone automatic climate control that keeps every row of passengers comfortable.The cabin is anchored by GMC's IntelliLink infotainment system with an 8-inch touchscreen, navigation, Bose premium audio, Bluetooth connectivity, and available rear-seat entertainment. The Denali's interior is trimmed with unique chrome accents, wood-grain elements, and premium materials throughout that you simply don't find in lower trims. Three rows of seating, power-folding second and third rows, and an enormous cargo area make this one of the most versatile family haulers on the road.GMC Yukon XL Reliability and OwnershipA Proven Workhorse With Staying Power The fifth-generation Yukon XL, which debuted for 2015, was a significant step forward in refinement and technology over its predecessor. The EcoTec3 V8 has earned a strong reputation for durability, with many owners reporting well over 200,000 miles when properly maintained. The 6-speed automatic transmission is a proven unit known for smooth, reliable operation over the long haul.Common ownership feedback highlights the ride quality improvement GMC introduced for 2015, along with the magnetic ride control available on the Denali, which adjusts damping in real time for a noticeably smoother ride than competitors. As with any high-mileage V8 SUV, keeping up with oil changes, transmission fluid, and transfer case maintenance is key. At 77,325 miles, this Yukon XL is well past its initial break-in period and into its prime reliability window.Why Buy From Pristine Cars & Trucks in Marietta, GA Pristine Cars & Trucks is a trusted independent dealershi