oldchev
Full Access Member
Who has experience with coolant leaks at the Engine Oil Cooler connector at the radiator? I have a 2004 Yukon Denali. The top Engine Oil Cooler (EOC) connector is leaking at the radiator fitting on the tank (not the eoc line). As I understand, the tank (plastic) can be removed and the eoc gasket or o ring(s) replaced and tank reinstalled. Do these tanks have rubber o rings themselves? Anyone dared to DIY this issue? I read about one guy spreading the tank tabs and taking off the tank and fixing it but nothing on o rings for tank etc. I have heard a radiator shop can do it for $90 if you take it in. Online Delco radiator is $170+ so that's the easy way out if you want to explore. Just shopping to see who has dared to fix the actual problem. I am totally a DIY guy with 40+ years of fixing my own stuff. MS word doc with picture attached.
