Did you bleed the air oout of the cooling system - Their is a bleeding next to the therostat housing.
1 - When the vehicle is cold remove the rad(tank) cap and top up the level if needed
2 - start the vehicle with the rad cap off and leave the car run until you can see that the therostat has openned(look in tank/rad) to see fuild flow then open the bleeder slowly to let any air out of the cooling system. Once you have coolant flowing out of the bleeder close the bleeder and install the rad/tank cap.
NOTE - Be careful with the engine running and hot Coolant.
You make need to bleeding system 2-3 time to get all the all out. Once all the air is out of the system you problem should be solved. If air returns to the coolant system have the system checked for possible head gasket leaking air into the coolant system
Air
Temperature Control Blend Door Failure No Heat or no AC (dependes on
where door sticks)
In
all modern cars there is a tiny DC electric motor driven gear drive
that moves a plastic door that blends heated and cooled air from the
AC and the heater core, this is called (interestedly enough) the air
temperature control blend door actuator. The motor that moves this
door fails because the door starts sticking from warping, most common
complaint is no heat but it can be no AC as well. To replace these
parts (blend door and blend door actuator) you must remove the entire
dash from the car. Always have this problem confirmed by a dealer or
qualified repair shop as it is a very expensive repair.
Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.
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