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  1. #1

    Default 03 1500 - Bad Blower Motor or Electrical

    Hi Guys,

    Hoping someone can help me out. Have an 03 Suburban 1500. The rear ac/heat controls do not work at all. When turning them you can hear a click in the back. I removed the rear panel to access the blower motor and resistor. The clicking was coming from the resistor, so I purchases a new one at AZ for almost 100. Put it in and things blew great, for a minute. Then it was back out and back to the clicking sound from the resistor. Could the blower be bad and drawing too much, therefor blowing the resistor? Bad resistor out of the box? Other electrical problem? Any help would be greatly appreciated. Thank you in advance.

  2. #2
    Jr. Mechanic
    Join Date
    Mar 2013
    Location
    adirondacks,n.y.
    Posts
    113

    Default

    havent heard of a bad blower motor taking out a resister,try the old swat with hammer on blower motor case,most often it is a bad spot,shocking it will confirm,otherwise take off connect and check for power

  3. #3

    Default

    How was the resistor wired? Sometimes they have a connector and they are plugged into the wiring, others require splicing into the wiring.

    If you have one with the connector, sometimes the new connector is plugged into a burnt old connector. Check the condition of the old connector that the new resistor connector is plugged into, if burnt, you will need a connector replacement kit.
    Ray

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

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