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94 suburban no rear heat

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by btharvick, Dec 20, 2008.

  1. btharvick

    btharvick New Member

    I have 94 suburban with the rear ac. The heater in the back doesnt get hot. I have read a lot of forums on here about flushing the heater core. The only lines i see going to the rear seem to be ac lines, and the ac seems to work fine. I also noticed that the rear ac knobs say AC. Is it possible that this truck only has rear AC and not heat ? I cant seem to find any other lines. Do the ones with heat have four lines running into the box? Any help is appreciated ! Thanks
  2. 04sierracrewcab

    04sierracrewcab Epic Member 5+ Years 1000 Posts

    checked for vaccume leaks???
  3. JMoney02

    JMoney02 Epic Member 5+ Years 500 Posts

    It doesn't have the control knob that changes the climate from HOT to COLD(Blue to Red) and the control only shows A/C on it? Some of them came as option choice, so it is possible.....04s is right, check the Vac lines inside the truck, they would be the ones to switch from one function to the other.


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