After getting gas the other day, I started the car and there was no air blowing out the vents. The air had been working fine before I stopped at the gas station. When the car is moving above 30 or so mph, there is a little, very little, air coming out of the vents as long as the recirculating button is not pressed. With the A/C button on the air is still very cool. Out of nowhere, while driving on the highway the next day the vents started blowing again, not full power, but enough to cool the car in 100 degree weather. Then the next day, while driving, the vents stopped blowing again. Still cool air but just not blowing.

I don't think any of this is relevant, but I just had front brakes replaced, a new radiator installed with new hoses, fuse box cleaned and new fuses where needed and a few belts adjusted/tightened that were squealing.

Is it my blower fan, resistor??? Any ideas?