Question about 1998 Oldsmobile Intrigue

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The heater fan only works on the highest setting, none of the lower settings work. I already checked the switch and that was not the problem. Any ideas ?

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Hello Jstorm.

When this problem occurs the blower motor resistor has gone open circuit.
The reason it works on high is because on high setting it uses full battery voltage and bypasses the resistor.
The resistor or module(depends on whether you have manual or auto temp control) is mounted below the blower motor on the heater case.
You may need to remove the hush panel just above where the passengers feet would be to get to it.
These are relatively easy to replace.
You will need to tell your part supplier whether it is auto or manual temperature control as the resistors are different for each.
Happy New Year.

KL

Posted on Dec 30, 2010

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Follow the wires from the fan switch down to the heator box you will see whear the plug in to the side remove the plug then two small screws and lift out the resistor that sounds like your proublem

Posted on Feb 23, 2013

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