Blower Motor Not Blowing

[YukonCrazy]

Over the past few months, there have been a handful of times where there is a delay in hearing the blower motor kick on after turning on the A/C or heater. When it happens, you can hear the motor kick on after a 30-40 second delay. I took the kids to school this morning and all was working fine. Going out this afternoon, the blower motor is not kicking on even after waiting for a few minutes. I can feel the heat from the vent, it's just not getting blown out. Bad blower or maybe a bad fuse?

 

[FoeHammer865]

I've run into something very similar. No problems, and then leave last night and it's not blowing at all, while riding in the passenger seat I hit the underside of the blower behind the glove box and it kicks on and works the rest of that trip. Then today again nothing but no amount of tapping brings it back....

No level of blowing, nothing.
'03 Denali XL