1996 Buick Roadmaster trunk won't open

Hello, is it extremely cold in your area? Do you think the lock is froze, because of weather? There is a spray type stuff for unfreezing locks, one of the posters here was telling me about it. I believe the autostores sell it.

If that isn't the problem, I guess you could try some WD, bang on the trunk lid with the palm of your hand, while trying to work the key.

I used to have a tool-box on the back of my truck, I lost the key and the box was locked. I drilled out the center of the lock cylinder and opened it with a screwdriver. I haven't tried that on a car trunk.