[Number6]

I found the answer to a little mystery that I’ve seen in a few reviews. There is a little step or opening in the rear bumper of the RS that the reviewers didn’t know why was it there and what is it for?

I was watching a YouTube review of a foreign trailblazer and the foreign (maybe it’s South Korean) versions have a small rear light or reflector in that part of the bumper. I guess Chevy is just reusing the same part for American cars without the light.

 

[ZR2LIFE]

I wonder if it's just a reflector or another brake light?

 

[OneAngryOtter]

I wonder if it's just a reflector or another brake light?

It looks like it's just a reflector, likely for regional regulatory reasons (the TB doesn't have any reflectors that most sedan headlights are actually at a height to reliably hit). The US, is rather lax and/or outdated with most of it's regulations surrounding cars (looking at you, banned luxury car adaptive highbeams)