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Apr 20, 2016 at 13:31 comment added Ben @Bevan to be honest I rarely see cars with a heater core water valve anymore it used to be common but I guess with the move to electronic actuators they didn't feel the need for them anymore plus they were almost always cable driven.
Apr 20, 2016 at 11:26 comment added Bevan @ben are you telling me that Chevrolet in all their advanced vehicle technology, have a heater core thatched permanently filled with blistering hot water irrespective of whether it is needed or not, that's nestled up in the dash and cooking the life out of the whole heater box even in the middle of summer? Seems a bit bizarre to this poor New Zealander!!
Apr 20, 2016 at 11:16 comment added Bevan @ben, and as I said, be it a water or air valve, it's stuck. As its an air flap/ valve... look at the actuating mechanism for breakage, obstruction or malfunction
Apr 14, 2016 at 20:42 comment added Ben On the Equinox there isn't a water valve the heater core always see's coolant. Like Lynn Crumbling said in his answer air temp. is controlled by the blend door.
Apr 13, 2016 at 5:02 comment added Bevan The heat has to come from somewhere - and be it a water or air valve, it's not moving.
Apr 12, 2016 at 20:14 comment added JPhi1618 Is there really a water valve that controls the coolant flow, because I thought there was only an air diverter in the heater box under the dash?
Apr 12, 2016 at 19:14 history answered Bevan CC BY-SA 3.0