how to front marker/turn signal bulb 2015 gmc?

[Sailfishlaux]

Hello all new to forum, proud owner of new to me 2015 GMC 2500HD Z71. The only issue I am having difficulty with at moment is that the right side front marker bulb is burned out, and access to pull and replace seems nonexistent. Pulling the air box would appear to be first step, but even with it out doesn't appear to be any way to get to bulb base.

Thanks in advance for any suggestions

[newdude]

Headlamp has to be removed most likely. The only bulbs that are really serviceable are the high/low beams on these new trucks. You will have to pull the grille. 4 screws hold the lamp in place, two on top and two on bottom.