There are several reasons that the inside alarms on your 2006 Chevy Trailblazer may stop working. The alarms are ran by the vehicle's electrical system so it is possible that you have a fuse that needs to be replaced if it is only the alarms that are not functioning.
You know the aircon is working because it gets colder inside when the car is stopped. You know the aircon is working because it gets colder inside when the car is stopped.
Is the light bulb inside burnt out. If so, that would do it.
it is the fuel level sensor located inside the tank.
the Chevy trailblazer does not have a cabin filter I checked at the dealership
There is a tiny amount inside most smoke alarms.
Inside the alternator
check the alternator
I have a door that keeps opening by itself. Is there some type of door alarm I can get for an inside door?
If it is not your speedo cable then it is probably a gear inside the speedometer. I fixed mine with superglue!
it is located in where the air filter is inside the box
It is now located inside the fuel tank!
YES, and you will find it inside of the fuel tank.