you will find it in the heater box, also where the blower is. it is easy to remove.
In a 1997 Jeep Wrangler, the relay switch for the heater blower and motor is located behind the dash. It will be directly behind the HVAC knobs behind the dashboard.
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.
Fan (heater/air conditioning) relay switch
The blower resistor is under the dash pad on the top of the heater box
Under hood fuse panel box. It is labled "Cooling Fan". To easily check it,swap it out with the "heater blower fan" relay and see if the heater blower works. Both relay's are made the same.
when the relay is working, it's energizing the blower... jump power to the motor, (be the relay!) to see if the blower works... also, listen to see if the relay is clicking "on" when you turn the switch on the dash(could be a switch) good luck d
heater fan blower motor is burn up not working need to replace it could also be a heater relay typically located on the fuse panel that needs replacing could also be the switch on the switch panel
where is the a\c blower relay on 2007 toyota tundra 5.7l v8
The high speed relay for the blower motor would be found under the hood, on the passenger side of the firewall, close to the blower motor speed resistor.
The Heater/Blower Relay is on the blower motor housing under the dash in the passenger compartment on 1999-2002 models
It could be the blower motor, control switch, relay (if your vehicle uses one), loose connection or bad fuse.
Only for the high speed blower function. The lower speeds go thru the blower motor speed resister.