Check the hoses going to the front heater core from under the hood. If one is hot and the other is cold, your heater core is clogged and will need back flushed or replaced. If both are warm(most common) then:
Your Hot/Cold Mode door actuator has failed and is no longer working in the dash. This is a common failure part.
Check the hoses going to the front heater core from under the hood. If one is hot and the other is cold, your heater core is clogged and will need back flushed or replaced. If both are warm(most common) then:
Your Hot/Cold Mode door actuator has failed and is no longer working in the dash. This is a common failure part.
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