WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Remove the bulb socket from the cornering lamp.
Release the forward retaining tab (1) from the fascia.
Remove the rearward retaining tab (2) from the fascia.