Heater

There are 2 fuse boxes. One is under the hood, passenger side near the firewall. Remove the top and there is a diagram showing location and description of each fuse.

There is another fuse box inside the car in one of three places. On the drivers' side under the dash at the kick panel. In Older Cutlasses the box is behind the glove box. There is a flap with holes to pull out the pocket, pull it out and the same diagram is on the inside of the cover.

If the blower motor is not blowing air, there is a resistor that can fail or the motor itself can go bad. The blower motor is on the passenger side under the dash.

I hope this helps. If you need anything else I will keep an eye on this post for your reply.