Fan only works on high

[Badluck]

My hvac fan only works on high. Do I just need to replace the control panel or is there a fan resistor or some other part that has failed? Thanks

 

[JKmotorsports]

On most models, there's two seperate fuses for the blower motor. One fuse protects the high-only speed and the other fuse protects the lower speed circuits.

 

[BOSS]

On most models, there's two seperate fuses for the blower motor. One fuse protects the high-only speed and the other fuse protects the lower speed circuits.

Son of a B.....are you secretly a GM engineer?


B

 

[Badluck]

Thanks

I'll check the fuses and report back.

 

[jomulk56]

Check the resistors too. I had a GMC Canyon that did the same thing, and it turned out to be the resistors.

 

[Badluck]

Fuses check OK

Where are the resistors located?

 

[ActSwedish]

+1 I have just bought a Tahoe -01 LT and there is no air speed on 1-3 only on 4 and 5. Where are these fuses located and where are the alternators?

Im a total noob when it comes to these cars, have had mine for 1day.

 

[rucr8z2]

Should be under pass side footwell next to fan has maybe like six wires to it and 2 screws holding it in.

 

[bkboatnsleds]

Yes, mine did this too. Its got to be the blower motor resistor.. In the footwell area under glovebox on pass side. 2 screws 1 plug... Fixed.

 

[Badluck]

Installed a new resistor and my blower still only works on high. Can it be the control panel?