I have the same problem on my 2006 Aveo. The problem with mine was with the socket that the bulb plugs in to. The contact on the bottom that connects with the middle of the bulb was fine but the side contact wasn't connecting to the outside of the bulb. I can get it to work intermittently by pushing the bulb against the contact.
I found your posting while looking for a replacement socket online so I thought it only fair to share my results.