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1994 GMC Safari Question: Rear heater



, Powhatan, VA, April 10, 2010, 18:13

I just replaced the water pump in my van. Checked the hoses, thermostat etc. They are fine. I keep getting a hissing from the rear heater, and the carpet gets wet and steam escapes from the rear heater. I'm putting 2 gallons of water/coolant in it every day. What could be the problem? Is it an expensive fix? Thanks.

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  • Answer #1

    Visitor, November 09, 2010, 20:49

    sounds like your rear heater core has a leak

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