We put the 2020 GMC Sierra AT4 through our lineup of tests to see how it stacks up.

We try and go in-depth here on Truck King, but that can make the videos a little long. Here's a quick way to access the section you might want to watch. Video glossary:

Walkaround - 1:06
In-Depth Look at CarbonPro - 2:22
Sierra AT4 Pricing - 4:16
CarbonPro Easter Egg - 6:07
Payload test - 10:27
Towing test - 15:32
Off-Road test - 22:28


#GMC #Sierra #Trucks