In this video we take a look at a brand new 2021 GMC Sierra 3500HD AT4 with the 6.6l gas v8 engine finished in Summit White paint!

Thanks for watching, and please consider subscribing!

https://www.gmc.com/trucks/sierra/250...
https://www.martysbuickgmc.com/

#BrianMello #MartysBuickGMC #2021GMCSierra