The GMC Yukon is completely redesigned for 2021. It has more third-row legroom, more cargo space, advanced technology and a new off-roading AT4 trim joins the lineup. All Yukon engines are now paired with a 10-speed automatic transmission and later in the model year, a diesel powertrain will add to the two V8 options. Let’s compare it to the 2021 Dodge Durango with its refreshed interior and exterior styling and new SRT Hellcat model and see the differences.