I have been trying to ignore this popping clicking noise over small bumps for awhile now! Ive finally had it and decided to do something about it. I know there is a TSB for this problem but what have they done to the new part to make it stop making this noise. I removed the front bumper removed the extension and went for a drive. Noise is gone. I tried putting pieces of rubber between the frame and bumper extension as well as between the bumper extension and the cross piece. Went for a drive noise was back. My question after this rambling is what can i do to the old extensions as i am out of warranty? Oh after all that i had to change my AC clutch!