The blower motor resistor that sits behind the blower motor itself all the way against the firewall.
The blower may simply have burned out. If the blower is out then the heater probably still works.
How to change blower motor on 2000 grand am gt
my infinity g-20 blower not working
Please email me a photo of where the blower motor resistor is and how to change it. Thanks, Michael. By the way I want it for a 2000 Sunfire not a Grand Am.
heat not working
Check for a bad blower resistor at blower motor
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.
EATC
If it has only high speed, the blower motor resistor has to be replaced to get all speeds back.
Defective Blower Motor Resistor Pack.
If you're talking about the inside blower motor you need to check the blower motor resistor and or wiring to it as it can cause this problem. Usually the slower speeds go first though. Could also be caused by the dash switch.
replace the blower motor resistor. it is located on the firewall near the heater hoses.