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What is your question?
Air only blows cold and when turned on heat there is a constant clicking sound.
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Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. What you are describing is a classic example of a temperature blend door actuator that is not effectively turning the doors in the heater Plenum from cold to hot air mode. The trick is - to learn if it's a blend door actuator concern or a fractured plastic plenum door concern. I've seen both with this vehicle. Hands on inspection is needed. Some dash disassembly may be necessary to get a visual inspection that is needed. Also, do you have "dual zone" climate control, where you can set separate temperatures for the driver's side versus the passenger side? If so, you may want to manually move each temperature selection on its own; you may find that only one temperature blend door motor is faulty. If you need some guidance, reach out to a local shop near you. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.