My heater went out in my truck. I replaced the heater core and thermostat.
Nov 7, 2017 at 2:28 AM
Heater not working
ANDREW NORMAN SR
- MEMBER
- 1 POST
If you still have no heat, allow the engine to warm up to operating temperature with the heater on high. At that point, feel both heater core hoses. One is a supply hose and the other a return hose. Both should be hot. If they are, suspect the blend air door is not functioning to allow the heat to enter the vehicle. If one is cold and the other hot, either there is a blockage in the system or you have an air lock not allowing the coolant to flow through the heater core.
Nov 7, 2017 at 10:54 AM
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