Thanks alot guys, lots of good suggestions, you might have something there with the rain water b/c I have those heavy rubber mats, and who know how long the puddle was under there. Thing is I vacumed it out 2 days ago, and the water is what looks like to be slowly coming back. Its skanky, but do I dare dab my finger and taste it to see if it is sweet tasting. I'll try anything that doesn't involve the removal of the heater core right now. <img src="/forums/images/graemlins/rolleyes.gif" alt="" />

It's hard to beat old trucks!!