Quote Originally Posted by cpe6 View Post
I took the car out last week and tried to turn the A/C on and nothing happened; blower motor didn't come on at all; what could possibly be the problem? I have heard blower motor or resistor..
It's usually the BCM. Due to environmental concerns, the solder in the BCM has no lead, which caused brittle joints. That is why it may work for awhile after you tap it. I repair them with high content lead solder and add an extra connection for reliability.