Question about GMC Yukon

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Heater/AC fan only blows when switch is on 4 or 5. There is no fan action on 1 , 2 , 3, Is it the switch or the fan motor ? This is on a 2001 Yukon

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It is the switch

Posted on Sep 12, 2010

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1 Answer

Fuse keeps blowing on a/c on 2001 dodge truck


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1 Answer

My 2001 yukon front AC fan only blows on high setting. nothing on the other fan settings.


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1 Answer

Heater controls


It may be your blower motor RESISTOR, in gm cars it may look like a card that is connected near the blower motor,under the dash, on most cars this is what gives you variable speeds, except on the HIGH speed is usually wired directly to the battery through a relay.

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How replace the resistor for the heater /ac blower motor


According to my data base, you have to remove the right side instrument panel lower insulator to access it. I'm not quite sure what that is, but these things are always located in the blower motor box so that the fan blows on them because they get really hot. Hope this helps. If you get the new one first, you will know what you are looking for.

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1 Answer

Ac/ heater fan only works on #4 high . is it the switch or the fan itself ? #1-3 nothing . ac is cold and heater is still hot.


u will need to replace the blower motor resistor, it is located next to the blower motor under the hood on the passenger side

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Heater blows cold, and fan switch only works on 4 and 5


working on 4 and 5 speed that the resistor that broken cold air you got to move the selector to see the motor that move the trap hot and cold sometime when the motor was not move to the hot side for a long time its jam the motor on the passager side under dash put to hot and gently tap the motor tanks pierre

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