Water, Water, Water in glass housing! Mine leaked like crazy! Take a piece of paper towel and soak in the housing after bulb is out. If it is even damp, then water is most likely your problem.

2001 Cavalier
150-175 more kms
per tank of same size
Pioneer 12 CD Changer

SOLD Green 98 Mystique
GS Sport
Zetec ,ATX
885 Fogs mod.
Hi beam mod.
205 15s