My 2010 Titan heat not working the heater core is not leaking so what can it be
2 Answers
stephend103 answered 9 years ago
Maybe the heater control valve. It's underneath the hood on the firewall and the heater hoses go to it.
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stephend103 answered 9 years ago
You might be able to bypass it with a double-ended hose barb, and see if it helps.