[GuMan]

My 2002 Denali low beam headlamps seem to be getting more and
more dim. I have pulled the bulb and energized it out of the housing
and it is plenty bright. I checked for excessive I-R drop on the way
in and out of the bulb, and all seems normal. I checked and even
swapped fuses and the headlamp relay with others of the same type
in the front service box. I also swapped high and low beam bulbs,
since they are the same type.

I just seems that the design of the projectors sucks. The bulbs sit
WAY back from two horizontal shutters which only allow about 1/4
of the lens to receive light from the bulb. The lens seems to be
fogged with sputtered material and the shutters and other surfaces
seems to be less than shiny. If they designed the opening between
the shutters to be this small, they should have made sure all other
surfaces in the rear of the projector lamp were highly polished, so the
light would eventually find it's way out between the shutters.

The high beams work great, as they are not projector lamps. Has
anyone experienced this? If so, any remedies? I don't think they
were this bad the first couple of years we owned this vehicle.

Thanks,
GuMan