Does anyone know if theres a retaining clip you have to depress or pull on the low coolant light plug at the bottom of the degasser tank? I can see and access the back half of the plug with long needle nose pliers if it pulls straight off. Trying to avoid pulling the tank to unplug. Tia. I think i fubared the sensor during my coolant flush procedure by continuously overflowing the degasser tank with hose water. Light remains on constantly.