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Cabin heater-a/c fan no longer runs at low speed. Speeds 2-5 work fine
1999 Chevrolet Silverado 1500

Cabin heater-a/c fan no longer runs at low speed. Speeds 2-5 work fine

(1999 Chevrolet Silverado 1500)
I've just lost the low heating-a/c fan speed in my old truck with only 62k miles. From what I've seen the problem most likely is a resistor plugged into the fan motor within a plastic enclosure beneath the dashboard. I can live without the low speed; however, it appears that after a while I'll have only the high speed.

Dealer quote is in excess of $150 for this repair. I'm pretty handy and have a complete set of tools, but I'm not experienced at electrical diagnostics. Is this resistor something I should be able to replace myself? Is it available from sources other than GM dealers? Thanks for your help.
in Cato, NY on July 15, 2010
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Popular Answer
most of the time the resistor pigtail for you fan speed control gets loose from vibration and draws a lot of resistance and burn out the resistor=replace resistor and pigtail that will solve your problem.
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most of the time the resistor pigtail for you fan speed control gets loose from vibration and draws a lot of resistance and burn out the resistor=replace resistor and pigtail that will solve your problem.
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