Headlights conversion to either conventional 9006 or modern HID or LED

Hello, I'm Danny.

It should be pretty straight forward replacement. Most all aftermarket HID kits are simply plug-n-play. If you remove the aftermarket HID you just might have an extra screw to remove that's used on a ground wire.After that just simply put a 9006 back in the factory socket/harness.

https://www.2carpros.com/articles/how-to-replace-a-headlight-bulb

Let me know if have an further questions.Hope this helps and thanks for using 2CarPros.

Danny-

This is not an after market HID. It’s factory installed. It was available on the 2000 GMC Envoy as an option.

Hello again.

Oh Okay, I've attached a few pictures below of the high beam, low beam, and headlight relays including their location. I've circled them in red.. Have you checked these to see if they are good/burned out? Here is another tutorial on how to test relays:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let me know the outcome of you checking these. I can also provide you with a headlight wiring diagram if needed.Hope this helps and thanks again for using 2CarPros.

Danny-