I had this same problem with my headlights, the plastic melted around the mounting area. The bulb heats up and melts it just enough to make it stubborn. If your other light is not burned out yet be sure to replace it as well, the newer bulbs have better plastic mounts and if you replace it before it burns out, you can turn it on to heat it up first making removal very easy. I spent a hour trying to get mine loose, It drove me nuts. like the others said be careful to not break the mount, it wasn't until I got it out I realized it was melted, if I had known that I might of taken a hair dryer to it to warm it up or something. Good luck!

__________________
Brian W. Heitman

www.MBCA.org/northtexas

Join MBCA!!!