Key on, engine off, it shows 20" of vacuum? Try unplugging the MAP sensor. (on the front of the throttle body) and see if that changes.

TPS won't go to zero. That's just the way they are designed. After a PCM reset, the computer will take a look at TPS value, (voltage) and use that as the "closed throttle" value. (and drop into idle mode.....)

No clue on the interior lights. Didn't hit the headlight switch did you?

 

check the door pin for the interior lights, since they weren't working before and now working and staying on it sounds like a door pin is shorted

 

The light didn't work before because there wasn't any bulbs in the map lights, and the dome light had a led light in it which I assume was in backwards

I gotta figure out how to get this switch and pull it (passanger side) as the driver side turns the buzzer on and off so I figure that one is fine

But yeah I'm stoked to see this app do its work