Bad pun, sorry.

All that stuff, the doors and flaps that port heat/cooling air around are vacuum controlled. I think you have a pretty bad vacuum leak somewhere.

Check underhood and inspect your vac lines soft rubber connectors. If they have never been replaced, the connectors are due. Look particularly closely at the small bundle of vac lines that go through the firewall. If you don't see anything wrong under the hood, you will have to pull out your glove compartment to inspect vac connections there. If nothing there, you may need to pull your HVAC control unit and possibly the instrument cluster to find the rest of the vac actuators.

Go slow and methodical and you will be successful. A MityVac tester would be very helpful.

Any other vac operated stuff not working? Door locks, trunk or fuel door, seat backs, engine stop. That may offer a clue.