[BahamaTodd]

The Silverado EV is running 275/50 24 tires which are 35s. That's the same size as the Hummer EV tires so we can scale images of the two pretty easily.

We can see the Silverado has a longer cab in the rear and a longer bed.

 

[camaroz1985]

I did an overlay in CAD. I can't figure out how GM gets the dimensions that they claim for the Hummer, specifically overall length. They list it at 216.8 in, but when I scale for the wheelbase and tire size, I get 211.8. The Silverado measures right at 231 using the same scaling, with a 148.1 in wheelbase (MT published 145.7 though). Would sure be nice to get some actual numbers from GM.