Question about 2002 Chevrolet Silverado 1500HD

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Heater motor only works on the two highest setting

It only works on the two highest setting . Is it the switch or the motor. Is it hard to replace?

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Have you changed the resistor ? If not check and see if it Is burnt also when doing so, check the wiring harness going from the resistor to the motor. Located on passenger side under glove box

Should be one or two screw to pull it out and unplug. 15 min fix

Posted on Jun 08, 2014

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emissionwiz
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SOURCE: Heater issue - only works when on highest setting

this is caused by the blower motor speed control resistor being defective, this part is located near the blower motor.

Posted on Oct 30, 2008

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