2000 E450 Headlight change madness

It turns out that pulling up on the two black tabs allows the headlight housing to pop out.

They use replaceable Halogen bulbs that are held in place with a threaded Holder on the backside of the Headlight assembly.

First unplug the Blue Socket ,then Unscrew the Black retaining ring. Then extract the bulb.

Replacement lamp will be a 4004 or a 4007 ! Note Get the correct one!

Available everywhere!

Here's a posting on Woodalls containing images on how to replace the bulb in your headlamp - I've never tried it but I've learned something as well. As GM owner, I'm used to removing a couple of bolts where the top of the lamp assembly connects to the core support.
Hope that helps!