The front bumper fascia has to come off first. After that is simple to remove by removing 4 attaching screws and a fender brace. The fascia and maybe the inner fender skirt will have to be removed for access.
The answer given about removing the wheel well lining was correct. If you rotate the tire inward, it gives access to the five screws on the front of the tire well and 3 grommet pop-outs in the roof of the well. To remove the grommet pop-out, insert a flat screw-driver in the slot and work the plug out. Then you can pull the insert. Takes about 10 minutes. Pull the wheel well lining down against the tire and you have clear access to the back of the headlight assembly. Goes easier if someone holds the lining while you reach into the headlight assembly. Make note of the alignment of the lamp before you pull it because the tabs only go in one way. Rotate the lamp counter-clockwise about 1/4-inch to remove. You must pry the prongs open to slip the connector off.
Or you can try in vain to work it from above. After 45 minutes of fussin and cussin I saw this thread and hopefully my experience will save you the same trouble.
Safety first...keep the lights OFF during this procedure.
Thanks for the post....after taping up my hand trying to reach from the top...I will try it. Good news is that the bulb was still under warrenty. I was happy to get a free bulb, I should have asked them to put it in....
worked well for my 2008. I was anticipating a treat like my brother-in-law's Tahoe. No such luck. But this advice probably saved a trip to the emergency room and not acting like a Christian. Thanks! http://needhim.org/