[DrRadar]

Sounds like the blower motor isn't running. I suspect it's behind the glove box like on the Grand Prix, but can't say definitively. I would find a schematic for that circuit and check it. If you find the blower motor, may be just three screws and one electrical connector to remove it. If you get it out, then it can be check with battery voltage. If it runs, then likely a circuit problem. If not, then likely a bad motor.

My son has the same car. I haven't worked on the A/C, but it also has the problem of the rear windows not working. I once made a feeble attempt to isolate the problem, but it wasn't anything obvious. And it just hasn't yet floated to the top of the priority list.