latest saga with the suburban

Your leak is probably the heater quick connect hose on the right head. What happens is the acid in the dexcool will corrode the pot metal the quick connect is made out of. Check it and if you can see the caked antifreeze you've found your leak. They're like 5ish dollars at any auto parts store, located in there help section. Just replaced mine on my 99 Tahoe. same setup as yours