Yep...turning them clockwise, just like tightening...well...a nut, which they are. I have turned them clockwise as far as they will go w/o forcing them. Yet, if I push in on the bottom of the light assembly - against the spring - it seems like there is almost 1/2" left on the adjusting screw. But that nut is just getting so tight.

Another question...the socket that plugs into the new light...is that a dealer item? I am missing one.

Thanks,
John

Are you missing the oem weather proof socket with harness for one of the fog lights? Was it cut off? You can get them at GM dealers for about $15-20.