1995 z71 air conditioner/heater fan
 

hey guys does anybody know why my fan doesnt blow when the switch is on. occasionally it works and then other times i have to lean over to the passenger side and pound it with my hand or get somebody to kick it. any info will be greatly appriciated. thanks

There is a blend door behind your glove compartment that is not opening and closing. It is either electrical or run by vacum. If its electrical then the motor needs to be replaced. If its vacum then check for a loose vacum hose.