Hi all, I have 2006 silverado 1500 extended cab with the auto driver and passenger climate control. All of sudden I can't get the thing to blow any air. It doesn't matter, hot or cold a/c or not. I can feel cold air while in a/c mode and driving but it's like the blower is not working. First thing I checked was the 40amp blower fuse, changed it with no luck. Any Ideas?