Question about 2003 Chevrolet TrailBlazer

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Blower control module

I have 2003 chevy trailblazer that keeps burning out the blower control module. I have put 3 in this month. I can't turn the blower down or off. Even when the car is turned off the only way to stop it is to pull the fuse under the hood.

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  • showdowne808 Jan 18, 2009

    I thought there was a relay also, or a resistor, but evidently it's all controlled by that module. The manual doesn't show a relay or resistor. After replacement, (of the module) it works for about 20 miles, then shorts out again.

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There should be a relay for that blower. sounds like the relay is stuck. see if you can find out where it is and replace it. You should find that info in a service manual for that vehicle. hope this helps: )

Posted on Jan 17, 2009

  • Jeremy Stringer Jan 19, 2009

    ok, well it sounds like you know more about this problem than I do,lol. I would study the wiring diagram, there has to be something else going on there. sorry I couldn't help.

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