Nothing too interesting about a Tahoe/Suburban, but what caught my attention is that port/flange on the side
My WAG is that it’s the exhaust, I just can’t WAG why it would be like that. Partially pointing me in this direction is the lack of a normal exhaust pipe, but that could mean anything from it rusted off to it’s simply not visible in the picture. Regardless, I can come up with a number of ideas why having an exhaust port like that wouldn’t make sense, so, what is it?