Best Answer

For most GM trucks or SUV's, it's under/behind the glove box. But the most GM motors do not have multiple speed capacity. That is usually a function of the switch. Many of the GM multi speed vehicles use the heater function switch assembly to control motor speed. Unfortunately, many of them are "solid state" and require that the entire heater function switch be replaced when something goes bad.

2006-07-31 16:46:51
This answer is:
User Avatar

Your Answer


Related Questions

What is a heater blower resistor?

Heater blower resistor is what controls the low medium high speeds...

Were is the low speeds heater relays for 1996 gmc?

You have a relay located behind the glove box once removed to the left and you also have a blower resister that controls the speeds located on the passengers side in the blower motor housing..............

Why will the heater blower work on the 2 high speeds and not the 2 low speeds on a 1997 Chevrolet Cavalier and what part needs replaced and where is it located?

you need a new rheostat !

Where is relay for blower speed 2001 Tahoe?

The relay for only the high speed blower function is located in the fuse and relay center under the hood. The resistor for the blower motor lower speeds is located under the hood, passenger side, on the firewall close to the blower motor.

Does a 1999 Chevy silverado pickup have reistors for the heater speeds control?

Yes, located in the blower motor resistor pack. Follow the wires backward from the blower motor to find it.

What does the heater resistor blower effect on a 99 mercury sable?

A bad heater blower motor resistor would effect one or more blower speeds other than high.

When the blower does not work on all speeds is it the blower motor?

usually the blower motor resistor pkg. located on or near the blower motor

You only have three speeds out of five on your heater motor where could the problem be?

blower resistor especially if its chrysler/jeep or blower switch

What causes the heater blower motor in a 2003 Trailblazer to not work in speeds 1-3 but works in speeds 4 and 5?

Probably the blower motor speed resistor is partially burned out.

Cause for low speeds on blower fan 1994 ford not to come on high speed works?

Resistor on the heater blower motor has failed

Why isn't my 1 and 2 blower speeds working in my 2000 grand am se?

The blower motor resistor that sits behind the blower motor itself all the way against the firewall.

On a 2001 Pontiac grand prix gt how do you know if the heater blower motor resistor is bad?

Blower wont work on all 5 speeds, usually the lower speeds tend to go first.

2002 trailblazer blower motor does not blow speeds 1 through 3?

The blower motor speed resister is burned out. This part is available from your local auto parts stores. The resister is located in the engine compartment, on the firewall, on the passengers side.

Why does the lower three heater speeds on a 1999 Malibu not work?

The blower motor resistor is defective. They go bad when the blower motor pulls to much amperage.

Where is the ground wire to heater blower on a dodge?

Year make model aside, most have power going to motor and grounds are through the blower motor resistor, setting speeds by using different resistors on the board, or in the case of automatic climate control, a power resistor control board, usually located in the heater box near the blower motor, google or ebay for one for your vehicle, get a picture of it in your head and look around the blower motor. They have diodes in them that fail and you will lose all speeds and other times, one or two.

How do you get heater blower to work at different speeds on a cirrus car?

replace the resistor pack on the fanblower, under glowecompartment

Why does my Rover 25 fan heater only works on 3 and 4 but does not work on the lower speeds?

The stage 1 relay has blown! it is located behind the glovebox door above the heater blower. # find it # pull it out # replace it job done:-)

Is there a relay switch for the heater on a 1994 Chevy truck?

Only for the high speed blower function. The lower speeds go thru the blower motor speed resister.

Heater switch has been replaced but still 134 speeds only working on 2002 Montana?

replace the blower motor resistor located on the passenger side under dash up in the corner.

If 2000 dodge ram heater blower motor has high speed only what is the issue?

If it has only high speed, the blower motor resistor has to be replaced to get all speeds back.

Where is the relay switch for blower motor s 10 Chevy?

Not knowing what year S10 you have, you can generally find the blower motor high speed relay nearby the blower motor on the firewall. The resister for the other lower speeds is also found close by the blower motor.

How do you find fault on heater fan not workin mk3 mondeo?

If all speeds do not work, suspect the fuse, the switch, the switch connector or the blower motor. If only high speed works, suspect the blower motor speed resistor. If low speeds work and not high, suspect the blower motor relay.

2003 Chevy sivlerado heater blower quit working on speeds 1 2 only works on 3-5 whats the problem?

The blower motor resistor is bad.

Why does the heater fan in a Honda Odyssey only run on two speeds?

Sounds like you need to replace your blower motor resistor.

What is wrong if the heater in a 1999 Honda Civic doesn't get warm?

could be thermostat or heater fan if you can hear all the speeds on the blower motor working then it could be your thermostat but your heater core might be plugged as well