Auto Air Conditioning & Heater Repair: Fluid on passenger side floor of 08 DTS, cadillac dts, antifreeze

Question
Today I noticed liquid underneath the floor mat in front of the passnger seat of my 08 Cadillac DTS.  I removed the mat, which was relatively dry on top, but could fluid pooling in one corner.  The entire floor board of the carpet is wet all the way up to where you might place you feet under the dash.  About a month ago I had the car serviced by Cadillac and they did a throttle body wash as well as regular service.  The fluid has no smell but it soaked up two towels.  Air conditioner blows fine and cold.  Three months ago I was rear-end and the back end of the car needed extensive repairs of about 7K but I doubt that would relate to whatever is leaking.  Any ideas or what I should tell the mechanic at GM?  No beverages have been in my car.  I noticed the liquid today but not over the weekend or before.

Thanks.

Answer
HI Scott

When you say liquid do you mean water or antifreeze.  If it is water then your drain is probably clogged up.  Just have it flush out.  If it is antifreeze then you will have to of been adding to the system and it would be oily to the touch.  Let me know and I'll help.