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HVAC controls not working '89

Discussion in 'Chevy C/K Truck Forum' started by mfklein24, Nov 5, 2008.

  1. mfklein24

    mfklein24 New Member

    Hi, i noticed on my 89 chevy pickup that my HVAC controls only half way work. the A/C button doesnt' do anything and neither does the defrost button. It doesn't even show it on the display and nothing comes out of the vents. I checked my fuses and they are all good. so is the control unit toast? or is there something else that could be wrong? i really need this fixed before i get caught with a frosted window! thanks
  2. unplugged

    unplugged Epic Member 5+ Years 1000 Posts

    Most likely the blower relays or the fan motor itself.
    Check out AutoZone's website for information on climate control parts.

    Here is a picture of the hi/lo relay:

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