Hello All
New to the group a have a 06 Hummer H3 love the truck but recently in the last few months I have had a problem where my right headlight is dimmer than the left. it is to the point where it is almost out. I changed the bulb twice and the same happens, checked the connection it is good any direction would be appreciated

 

Check the grounds. Make sure they are clean, bright and tight!

 

Electrical contact cleaner is your friend. These trucks are getting older, electrical connections are subject to the elements & corrosion.

I second nelsontj and suggest spraying the bulb sockets with good old CRC.