Yeah we figured it’s a piece from a brush. Carfax doesn’t show any accidents but the daylights are not aligned well with the bumper. Right side (where the headlamp is that I suspected to be changed) has much bigger gaps than the left side. The glass is GM original though and the bumper didn’t look painted. The bolts for the headlight look like they aren’t touched. Carfax and auto check reports doesn’t show an accident either.The headlight “blue stuff” is a car wash brush that got stuck in the crack and tore off. This happens on my Denali occasionally too…from day 1, and it is perfectly aligned and fits perfectly…a consequence of the design not meshing well w/ a car wash…
But, a CarGax would show if there was any accident damage at all.
Right now this and the windshield with the frost pattern are my only concerns. Other than that the vehicle looks like brand new.