Where do I locate the blower motor resister on a 2002 trail blazer. fuses are ok. fan does not work. first lost 1,2,5 speeds a few weeks ago then lost 3,4 today.
Re: Where do I locate the blower motor resister on a 2002...
Below the right side of the dash, next to the blower motor, also, check the plug that plugs into the blower motor resistor, I've seen those plugs get melted and lose connection..
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Your blower motor resister could be bad,here's a link to where it's located,easy to remove yourself,2 screws hold it on,first remove electrical connector from it,then remove screws.This part controls blower speed.When going out,all speeds don't work.Here are the resistors,remove yours and compare to these.
Hello,
You may want to try your fan on all speeds. If it will work on high, you have a bad resistor for the fan motor. ( high speed doesn't go through the resistor ).
If it doesn't work on any speed, I would check the following;
1. Make sure the fuse isn't blown for the fan blower motor.
2. Check, or have checked the wires between the fan control switch and the fan blower motor.
3. Have the fan control switch checked.
4. Have the fan blower motor checked.
1-4 speed are the blower motor resister . It controls all 1-4 speeds, also it's under the passanger side dash around fan, the 5th speed runs off a fuse the is located in the fuse box. It's one of those square fuses , not the relays but fuses. The resister will run $15 and fuse $5 . Good luck. I have replace these before
If 1, 2 & 3rd speed not working, it is resistor (assuming you don't have EATC). High speed will work if fuse is ok and resistor is burned.
EATC = Electronci Auto Tem,p Control (Digital)
Two possible areas I would check using an ohm meter.First is the blower resistor which is usually located by the blower motor and looks like a cement rectangle or a ceramic tube with wires attached to it. The resistor should have very low resistance but should not read open from the common lead to the other terminals. If it tests good test the continuity of the fan switch. Some cars have a fuse for the high and low blower speeds so you can check your fuse diagram and look for two blower or fan fuses. Good Luck.
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