1999 GMC Sonoma Logo
Posted on Jan 02, 2009

Blower not working on setting 1 or 2

Hi, 
I have a 1999 GMC Sonoma 4.3 V6.. The heater fan is not working on setting 1 or 2, but works fin on 3 and 4.. How do I get all settings back?

  • Anonymous Jan 18, 2009

    Mine only works on 2and 3. Havent tested it yet but think its likely the resistor.

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  • Posted on Jan 02, 2009
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It sounds like the fan speed switch ...but im no expert

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