General Motors unveils new high-end GMC Sierra Denali and AT4X pickups : Rashtra News 2022 GMC Sierra 1500 AT4X (left) and Denali UltimateGMDETROIT – General Motors is rolling out two new high-end GMC Sierra 1500 pickups, including one called the Denali Ultimate, that will start at more than $80,000 – making it the most expensive