Question about 2004 Chevrolet Silverado 1500 Crew Cab

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Same with my 2004 1500

I would think it would be the switch. have not looked in to replacing it yet.. but winter is coming and it would be nice to have the lower fan

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I'm guessing you're talking about not having all the speeds for your HVAC blower. If so, the most common failure is the resistor. It's located under the dash on the passenger side. It will have a 7 wire harness going in and 2 wire coming out and should be held in by 2 screws. Check to make sure the 7 wire plug isn't melted, as this was common on some years. If so, it will need to be replaced as well.

Posted on Sep 11, 2009


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