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The first step is to verify flow through the heater core. You do this by feeling the hoses going into the firewall while the engine is warm, both hoses should be hot or warm to the touch as the engine is running, if one is hot and the other cold or luke warm then there is a problem with flow through the heater core. If you find that both hoses are hot then the problem is probably with the blend door inside the HVAC system and you should consult the service manual for your vehicle to see how it is suppose to operate to repair it.
It’s also not a bad idea to check for air in the system just to be on the safe side.
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Try that, they are both hot. Even did a flush! But yeah I will definitely check that out, and see where that takes me. Thanks! Do you think that it could passably be my cold/hot switches on dash?
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