This weekend I installed the GM fog light kit, 39109170. I installed the all hardware; the fog light housings, fascia/trim panels, light switch and the windshield washer reservoir. Per the instruction sheet, I started out trying to remove the front bumper but got stuck at those pesky bolts that attach the bumper cover to the fenders. I had undone all the lower bolts and figured it was worth trying to squeeze the reservoir tank out without fully removing the bumper cover. I'm happy to report that it is doable, as long as you remove the bolts that connect the spoiler/bumper cover to the wheel well shield. Actually, it looked like the fog light housing would fit between with the original reservoir in place, but there would be little clearance to change the bulb in the future. The new reservoir allows for plenty of space. The passenger side was a piece of cake. I did everything with the car up on Rhino ramps. If it's nice next weekend I'll install the wiring harness.