Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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KHLOW2008
CAR REPAIR CONTRIBUTOR
41,814 POSTS
Hi kenneth,
Thank you for the donation.
Heater system is not equipped with any control valve. Heater core has coolant running through all the time and the air temperature actuator is the one controling between heat and A/C.