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  1. R

    A/C blower motor only works on high

    Thanks for confirming it. I didn't want to throw more parts at it if it is a wiring issue.
  2. R

    A/C blower motor only works on high

    Hello, New SB owner. It's an '87 lwb with a 350 and factory air. When I got the truck the fan didn't work at all. I have replaced the fan on the firewall and replaced the speed selector switch in the dash as well as the resistor in the box next to the fan under the hood. Now the fan only...

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