I Get A Vibration When I Put The Blower On Defrost
It doesn't start immediately. It kicks in after a few seconds on defrost. Goes away when I switch to another mode and it goes away when I drive. It seems to be happening when I am sitting still or in Park.I did not see a drop in RPM's on the Tach and the Tach needle doesn't vibrate. The A/C doesn't work, not charged, but this vibration isn't affected by pushing the A/C button. It does not go away when I rev the engine. I can feel it in the steering wheel and in the seat. I can hear it to. Sounds like a low level hum. I am not sure its coming from the engine. If anybody has some things I should check out. Let me know.