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Where is the drain on a 99 ac setup.

Discussion in 'Chevy C/K Truck Forum' started by Fe Fanatic, Oct 25, 2009.

  1. Fe Fanatic

    Fe Fanatic New Member

    Hi, I am getting water in the heater motor and carpet after a rain. I am looking for the drain for the cowl as I am sure it is leaking into the duct work and getting to the heater motor. I have looked for the drain and can't locate it. This is on a 99 crew cab pickup.
  2. Jimmiee

    Jimmiee New Member 1000 Posts 100 Posts

    Pour a bucket of water in there and look for the drain. It's under the tunnel. If it's plugged up the cowl will fill up with water. If it's clear you will see the water coming out the drain.
  3. unplugged

    unplugged New Member 1000 Posts 100 Posts

    Mine is behind the windshield washer reservoir. It looks like an angled sparkplug boot sticking out of the firewall on the passenger side.

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