Question about 1994 GMC Suburban

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A/C fan speed control resistor location for 1994 suburban

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Under dash, passenger side, sit next to the blower motor, on the housing.

Posted on Aug 19, 2010

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What will keep heater fan from working( both fuses check good)?

The speeds are controlled by a resistor pack. Changing the resistor pack may restore full functionality. Volvo heater fans are notorious for squealing. Usually they are run at a speed that doesn't squeal. If it squeals at one speed, sometimes a different speed won't squeal. The resistors seem to eventually fail. They are fairly cheap to replace.

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My 1994 acura legend ac only works if i turn it on full blast

High speed only is caused bu a defective blower motor speed control solid state resistor. The resistor is located in the air ducting (for cooling) next to the blower motor under the dash on the passenger side of the car. Remove the lower dash panel to access the part. See picture below of resistor.
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This is a common tsb for these vehicles, it is called the blower motor resistor that has failed.This part is located on the evaporator housing .This is a simple repair, this invovles removing two bolts and one pigtail from the resistor, get back to me with any questions, I'M here to HELP!!!

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1 Answer

Replaced alternator on 1994 ciera and now the heater fan doesn't work. any ideas?

Probably just a coincidence. Try the fan on all speeds. If it works on some, but not all, then the resistor module is at fault.
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Oct 23, 2009 | 1994 Buick LeSabre

1 Answer

1999 C1500 Suburban - Front Blower Either Runs On High Or Not

high amperage draw. do all the speeds work? if so replace the motor. if not replace the resistor and the motor.

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1 Answer

99 suburban blower fan runs on high only

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