With the Sierra 1500 truck, for example, you can add on the AT4 Preferred Package (with rear sliding power window for the cab and adaptive cruise control) or the AT4 Premium Package (which ...

GMC Canada has announced the debut of two new trim levels of the 2026 GMC Sierra EV for the Canadian market, including the Elevation trim and the off-road ready AT4 trim, to complete a three-trim ...