For 2021, the GMC Yukon AT4 was only available to order with the 5.3L L84 V8 engine. That will change for the 2022 model year, however, with GM set to offer the 6.2L L87 V8 on the off-road-focused trim level for the first time. The 6.2L L87 V8 is the most powerful engine available in the GMC Yukon, offering up 420 horsepower and 460 pound-feet of torque.
It’s worth noting the 2022 GMC Yukon AT4 will still not be available to order with the 3.0L LM2 Duramax turbodiesel inline-six engine. As we reported previously, the unique front fascia design on the AT4 obstructs the intercooler and intercooler piping needed for the diesel engine, so it cannot be offered in conjunction with this trim level.
Whether it features the 5.3L L84 V8 or 6.2L L87 V8, all GMC Yukon AT4 models feature the GM 10-speed automatic transmission, along with a standard two-speed active electronic Autotrac transfer case.
In addition to its unique front fascia, the 2022 GMC Yukon AT4 also comes standard with 20-inch wheels wrapped in Goodyear All-Terrain tires, red front tow hooks, a front underbody skid plate, an off-road inclinometer for the head-up display and a variety of exterior and interior AT4 badges.
Prices for the 2021 GMC Yukon AT4 start at $66,795 with the only available 5.3L L84 V8 engine. Pricing for the 2022 Yukon has not yet been announced, so it’s not clear what kind of price premium the L87 V8 will have over the L84 V8. In the 2021 GMC Yukon Denali, which is currently the only trim available with the L87 V8, the larger engine carries a $1,625 price premium over the standard 3.0L LM2 diesel.