I helped a friend replace a headlight bulb on their 2006 G6 and took pictures of the process.

The guide covers the high beam, low beam, signal/parking, and sidemarker bulbs including part #s.

Here's the link - G6 Headlight Bulbs Replacement Guide (http://www.paulstravelpictures.com/GM-Pontiac-G6-Headlight-Bulbs-Replacement-Guide/index.html)

I hope someone finds it to be useful.

This was very helpful. I had gotten to the point of trying to pull the headlight assembly out. I really thought I was a going to rip my assembly apart because the assembly was in there so hard. Your note at least gave me a sense that it would come out. Thanks it is done! If anyone tries it, it will require some patience because you would think the design would be simpler. Afterall, it is a bulb.

http://i277.photobucket.com/albums/kk64/crabintakes/012-6.jpg

http://i277.photobucket.com/albums/kk64/crabintakes/Emoticons/04.gif

Don't you need that ball joint? I think I broke one of mine. The ball won't snap back into the socket.

The first time I changed the bulbs the car was 5 years old and it took an hour to get those lights to pull out of the ball and socket joint. It was just old, dirty, and stuck. Having someone to pull back the fascia helps. There really is not trick. But I can tell you that I covered the joint with vaseline and the next time I had to change the bulbs the headlamp assembly pulled right out.