2021 GMC Yukon XL SLT

The 2021 GMC Yukon XL SLT 4X4 represents a pivotal evolution in GMC’s full-size SUV lineup, and this example stands out immediately with just 30,628 miles since new. Finished in a striking Onyx Black exterior over a Jet Black leather interior with wood grain accents, it delivers the presence, space, and capability expected from a true extended-length SUV, now paired with the meaningful engineering advancements introduced for the 2021 redesign.

That redesign was not incremental. For 2021, GMC moved the Yukon XL to an all-new platform and introduced a fully independent rear suspension, replacing the traditional solid axle used in prior generations. This change significantly improved ride quality while also allowing for better interior packaging, particularly for rear passengers and cargo space. The result is a vehicle that retains its truck-based strength while offering a more refined and composed driving experience. The Yukon XL’s longer wheelbase further enhances passenger comfort, especially in the third row, making it a genuine full-capacity SUV designed to move people and gear with ease.

Powering this Yukon XL SLT is the proven 5.3L V8 engine, producing 355 horsepower and 383 lb-ft of torque, paired to a 10-speed automatic transmission. This combination delivers smooth, confident performance suited to the vehicle’s size and purpose. Equally important is the fact that this is a 4X4, adding another layer of capability and versatility. The Yukon XL’s body-on-frame construction already separates it from crossover SUVs, and the addition of 4x4 capability reinforces its ability to handle a wide range of driving conditions with confidence.

Inside, the SLT trim benefits from a substantially improved interior design introduced for 2021. The cabin is spacious, well laid out, and designed for comfort across all three rows. The front power-adjustable seats feature driver memory settings, along with heating and ventilation, providing both comfort and convenience. Rear passengers benefit from dedicated climate controls, ensuring a more accommodating environment throughout the cabin. The extended-length design of the Yukon XL translates directly into usable space, making it especially practical for larger families or those who require additional cargo flexibility.

Technology is equally well executed. The central infotainment system features a large display with AM/FM radio, Bluetooth connectivity, navigation, and a reverse camera, offering modern functionality in an intuitive layout. Audio is delivered through a Bose sound system, enhancing the overall in-cabin experience. Additional convenience features such as the power liftgate further emphasize the Yukon XL’s usability in everyday situations.

This example is also a 1-owner vehicle with a clean CARFAX, adding an additional level of confidence for the next owner. When combined with its desirable specification, low mileage, and the substantial improvements introduced for the 2021 model year, it becomes a compelling offering in the full-size SUV segment.

The 2021 Yukon XL SLT 4X4 ultimately distinguishes itself by combining traditional full-size SUV capability—body-on-frame construction, V8 power, and true 4x4 capability—with modern advancements in ride quality, interior design, and technology. This particular example captures that balance exceptionally well, offering a refined yet highly capable SUV that is built to handle both everyday use and more demanding needs with equal confidence.