latest saga with the suburban

72dust said

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

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Nope, replaced that quik connect pos a year ago. Bought a threaded pipe fitting w hose nipple on it, installed a restrictor in it same diameter that crappy factory coupling had, used a length of regular heater hose and clamps for the rest , from there it was the cheap plastic 3/4" plastic hose tees for the rear heat after that it was the radiator itself that let go, now its def the pump. You could see antifreeze coming right out of the weep hole