Question about 2003 Chevrolet TrailBlazer

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2003 Chevy Trailblazer leaks a/c condensate on passenger floor.

My 2003 Chevy Trailblazer leaks condensate on the front passenger carpet and from the front passenger side floor vents when the air conditioner is running. The a/c otherwise runs fine, and the fluid is definitely just water (e.g. it is not a core leak). I am assuming it is a plugged up evaporator drain, but do not know where to start looking for it.

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Under car pass side just behind tire on firewall looking for tube that makes 90 degree bend make sure not clogged if still leaking check for cracks in the evap case

Posted on Aug 10, 2009

  • casey bernard
    casey bernard Aug 10, 2009

    under car pass side just behind tire on firewall looking for tube that makes 90 degree bend make sure not clogged if still leaking check for cracks in the evap case

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Test heater core


Robert,
Using a cooling system pressure test tool to pressurize the entire cooling system, a heater core will leak into the HVAC [heater, ventilation and air conditioning] box [located under the dash board]. Once coolant leaks into this box, it will either drop onto the carpeting on the passenger side front floor OR drip out the condensate tube [where the A/C condensate water leaks out under the truck] The condensate tube is a rubber pipe located on the lower end of the passenger side firewall.
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