Jan 12, 2009 #1 D dhage86 New member Joined Jun 6, 2008 Messages 5 Reaction score 0 Points 1 1996 cadillac deville... Coolant levels are good... Worked fine one night and the next day it blew ice cold. Is it more likely the thermostat or else the heater core being shot or plugged? How can i tell if i thermostat is bad when i take it out?
1996 cadillac deville... Coolant levels are good... Worked fine one night and the next day it blew ice cold. Is it more likely the thermostat or else the heater core being shot or plugged? How can i tell if i thermostat is bad when i take it out?