The AT4 will be the highest-riding Sierra, with 2 inches of additional lift thanks to lifted coil suspension and new 35-inch tires. AT4 models will also share a number of features with GMC’s ...

We’re finally starting to see some 2025 GMC Sierra EVs on the road ... As we mentioned in the lead, you get 35-inch all-terrain tires and a one-inch suspension lift for two inches of total ...