Not only is it an Envoy XL, it's an '03-'04. Look at the wide bodyside / door mouldings. Just like mine. Also... If you zoom in reeeeally close on pic #2, you can see the D/S tail lamp looks to be amber over red, which is the GMC layout, yes?
Looks to be a 4.2L, as there's just too much 'gap' on the LH side of the engine bay.
I wonder how they got the hood off so cleanly? Some sort of recip saw, probably. And I'm guessing that SCBA gear might have been used, as that had been burning pretty hot / noxious for awhile when they got there. Not a pane of glass left, either.
Obviously, a total loss. Guessing they weren't maintaining full coverage, given the age of the truck (and even if they did... the residual would be what - about $2000 USD or so, depending on mileage?)
(and before anyone says it... yeah, I must have more time than sense, to spend this much time / effort looking at this... LOL)