2023 Gmc Sierra Dimensions Garrett Hoeger 16 Mar 2024 2023 gmc sierra hd refresh caught testing for the first time 2023 GMC Sierra HD Refresh Caught Testing For The First Time 2023 GMC Sierra HD Refresh Caught Testing For The First Time Check Details ← 2023 Gmc Sierra Denali Interior 2023 Gmc Sierra Gas Mileage →