I have friend with a later model (2007) Pontiac Grand Prix. Got a passenger side headlight out and he replaced the bulb to no avail...it was back together before I got to look at it so I didn't check voltage at the plug but he tried several bulbs and none worked so it's fairly safe to assume voltage is not present at the connector, but I'll check anyway.
I did check the fuse, and it was not blown. Didn't have my meter or test light so I couldn't really diagnose anything.
A few months ago I replaced the HDM relay when both low beams were out.
I just want to know if this is a common problem with Grand Prix of that era? I know it was always a problem with Cavaliers, Sunfires etc where wires would chafe behind the washer tank. Just curious if this happens often.