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.
Rear heater on 1994 GMC Safari
Asked by Visitor for the 1994 GMC Safari
This week's top 10
Recent GMC Safari Questions