lately, my car make this sqeaky noise everytime i turn on the heat. the noise seem to come from somewhere in the engine bay. any ideas why this happen and how to fix this problem.

 

blower motor probably.
or are you using the windshield defroster?

 

yeah i used the windshield defroster all the time to defrost the fog build up inside the car but the sqeaky sounds only comes on when i turned the heater leveling gauge to number 1, 2, etc. it doesn't make the sound when it is turn off. my thought was that some kinda wires used to pull the blower in the engine bay is loose or need greasing. but what????? is the heater blower located in the engine or inside the car?

 

whenever you use the defroster the A/C compressor kicks in
your blower motor is inside the car