GMC Repair: 2005 GMC Envoy Antifreeze smell, gmc envoy, heater core

Question
I have been experiencing a slight smell of antifreeze while driving.  Thinking Heater Core.  I checked the floor and it is not wet.  No leaks in the engine or underneath.  Thinking a very small leak.  What do you think?  If you think heater core, where is it at and how do you get to it?

Answer
Hi
I would recommend having the cooling system pressure tested. Have the leak identified FOR SURE, because the heater core is a VERY major job, having to remove the ENTIRE dash, basically everything from the front seats forward.
Have dye added to system, if possible also to help visually locate a leak.
I Hope this helps.
Good Luck
Pawl