the heater blower is located under the dash on the passenger side. easy to change ,4 skrews.
if your blower motor is not properly working it is most likely your blower motor resistor. it is located next to the blower motor which can be found by looking through your glove compartment. 17.99 at your local autozone
The blower may simply have burned out. If the blower is out then the heater probably still works.
Defective Blower Motor Resistor Pack.
resistor for fan blower is in back of glove box, beside the blower itself.
The blower on the back heater may need to be replaced on the 2000 Ford Winstar.
If a 2000 Grand Am sometimes has the heater blower working and sometimes it won't, the problem could be with the heater relay switch. The heater relay switch lets the heater blower know when to come on and when to go off. In most vehicles this switch is behind the glove compartment. This part sometimes gets corroded from condensation in this area.
fuse or relay most likely
To change the heater blower motor on a 2000 Chevrolet Astro Van open your hood. After you open the hood you will see the heater box on he passenger side remove the four bolts holding the motor in and pull it out.
right next to the blower motor I'm don't know about the 2000 model, but it is directly behind the blower motor of the 1999 Century.
There is a fuse under the hood for the blower motor.
down uner the glove box
The blower motor is located in the passenger footwell under the dash. You will need to remove the black cover which hides it and then remove the bolts from the bottom of the blower motor disconnect the wiring and reverse the procedure to install.