Home » 2023 GMC Sierra AT4X Raises The Off-Road Stakes, Beefier Than Ever » 2023-gmc-sierra-at4x-aev-edition-004 2023-gmc-sierra-at4x-aev-edition-004 Home » 2023 GMC Sierra AT4X Raises The Off-Road Stakes, Beefier Than Ever » 2023-gmc-sierra-at4x-aev-edition-004