Well, my blower went out and it turned out to be a false contact in the fusebox. Try locating the fuse, cleaning the contacts & fuse with tuner cleaner or gently with 00 or 000 steel wool. It can't hurt. Do this with the ignition off. You might even disconnect the battery. Check for continuity with a battery-powered 1.5 or 3v tester or a voltmeter.

Good luck.