I was wondering if anyone else is having the same trouble with the air on and then it will quit blowing.The blower is still running I can hear it running but it is not blowing out any of the vents.When I move the control to the different settings nothing changes When I start the truck again everything seems ok don't always do it just every so ofen.If anyone has any ideas where to look. It is a 2008 Dodge Dakota

 

check the fuses and the resister (usually located under the dash on passenger side.. its around 10 bucks to replace.. same thing happened to me now its blowing ice

 

Try lookin at the vent actuator motors and linkages, if the blower motor gives trouble usually the blower motor resistor.