2020 GMC AT4 HD on 37s | Duramax |Review, Walkaround, & Startup | Lifted | Ford or GMC? |

This is the full walkaround of a lifted GMC AT4 HD on 37s. Comment any questions below!! Make sure to like, comment, and subscribe to my channel so you don't miss out on any future content!! Follow me on : Twitter: gee___3 https://twitter.com/gee___3/status/13... Instagram: itsze.us https://www.instagram.com/p/CK68UEyMZ... ------------------- Email: [email protected]