2021 GMC Yukon XL SLT CARFAX One-Owner. 20/26 City/Highway MPG, SLT premium package, SLT luxury package, Heated rear seats, heated steering wheel, Panoramic Roof, Power liftgate, Back-up camera, Aerial view display system.2021 GMC Yukon XL SLT 4WD 3.0L I6 Onyx BlackAll vehicles are one of each. All Pre-Owned or Certified vehicles are Used. A dealer documentary service fee of up to $200 may be added to the sale price or capitalized cost. All offers expire on close of business the day subject content is removed from website, and all financing is subject to credit approval. Prices exclude tax, title, and license. All transactions are negotiable including price, trade allowance, interest rate (of which the dealer may retain a portion), term, and documentary service fee. Any agreement is subject to execution of contract documents. It is the customer's responsibility to verify the existence and condition of any equipment listed.