1998 aurora overheating
I had the same problem and tried several things that didn't help. A friend introduced me to a Northstar mech. that explained the real problem. Internal engine relief was faling which created overheating between cylinder sleeves and engine block creating blow back pressure in cooling system. There is a fix for this. The mechanic helped me with the problem and car is running once more... Anyone thinking they have a head gasket, intake gasket, or thermostate problem should look at this fix.