Question about 2004 Chevrolet TrailBlazer

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The heater/air blower has lost 1, 2, 3, and 4 settings. Only have 5, the highest setting left. Where is it located in the vehicle

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The blower motor resister is by the blower motor it is easy to change if you look by the blower it is right next to it mounted in the black houseing a plug with like six or seven wires and two screws holding it in

Posted on Oct 14, 2010

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Passenger side under dash ,reostat is built into motor so its a complete unit change

Posted on Oct 14, 2010

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Related Questions:

1 Answer

Heater only works on high temp


Do you mean the blower only blows on the highest setting? If so the blower motor resistor is defective. The blower resistor is located next to the blower motor in the air ducting under the dash of the passengers side of the car.

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1 Answer

Heater fan quit working. What would cause this?


You need a new blower motor resistor. shoud be under the dashboard on the passenger side around or behind the glovebox and should plug directly into the blower motor. Go to the parts store and buy one. Nothing else will look anything like it. so when you see it you will know what to replace.

Jul 28, 2012 | 2002 Dodge Grand Caravan

1 Answer

05 GMC sierra heater blower stopped working. It used to work on setting 1-4 but lost 4 a couple weeks ago and now none of them work. Is this a bad blower , resistor or both?


The resistor is most likely bad but should still work on the highest setting.Would check pigtails to the resistor and to the blower motor for burnt or discolored wiring.You can try tapping the blower motor and wiggling the wiring harness too see if it will work on the highest setting. It is possible that the blower motor is bad as well typically when you lose the speed selection it is the resistor but you should always have high speed.

Nov 10, 2010 | 2003 GMC Sierra 1500

1 Answer

The heater/air blower has lost 1, 2, 3, and 4 settings. Only have 5, the highest setting left. Are there fuses or??


IT HAS A BAD HEATER RESISTOR YOU CAN BUY A PIGTAIL HARNESS FROM GM AND REPLACE IT FOR ABOUT 25.00 IT IS JUST BEHIND THE CONTROLE KNOBS

Aug 16, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

Heater only works on 5 settings 1-4 don't work


you need to change your blower motor resistor it should be located neer or on the blower motor housing.

Dec 30, 2009 | 2000 Chevrolet Impala

1 Answer

Why would my 2002 Jeep Grand Cherokee only blow luke-warm to cold air when the fan is on high? First the heat went on the highest setting, so i used the second highest. Then it started to coll as...


Sounds like you need a blower motor resistor located down under dash on pass side next to blower motor. This is a comon problem and I have changed many of them. thats just the fan speed problem. Ive seen the blend doors break easily on those jeeps. thats inside the heaer core box and moves the flap from hot air to cold air. If it is stuck halfway -or mostly to cold- you may only get luke warm air. If they had the heater core out-maybe they possibly broke it.

Dec 04, 2009 | 2002 Jeep Grand Cherokee

1 Answer

I have 5 vent settings, settings 1 and 2 no longer blow any air, I have to use settings 3-5 to get any air flowing.


The vehicle has a bad blower resister which is located under the passenger side dash by the blower motor.:) The part runs about $45

Aug 09, 2009 | 2002 Chevrolet Tahoe

1 Answer

Heater issue - only works when on highest setting


this is caused by the blower motor speed control resistor being defective, this part is located near the blower motor.

Oct 30, 2008 | 2000 Chevrolet Prizm

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