[swervin ervin]

If no antifreeze smell, you don't have a heater core leaking. You have a water leak somewhere. If you have air, remove the kick panel and take the air flap out. Where it goes against the kick panel, it has some white sticky crap, like caulking but much more stronger, holding it and keeping it water tight. Mine leaked there if I drove in the rain or washed the truck. I recaulked it with some of the gutter sealant you can buy. No more leaks. Fix it quick though, it don't take long to ruin the floor pans and insulation.