Heat blowing cold, no fix?

Asked by Damon Oct 25, 2023 at 07:15 AM about the 2008 Chevrolet Equinox LT AWD

Question type: Maintenance & Repair

I've been trying to fix the heat in my car, but am a bit
stumped. When I turn the heat on, no matter what setting or
fan level, it blows cold.The car gets up to running temp,
maybe a bit below the mid line. Heater core was last
replaced about 5 years ago.Things I have tried/checked:
-add coolant
-replace thermostat
-hoses going to/from heater core are both hot
-make sure blend door actuator is functional

Any advice on next steps?

2 Answers
202,455

Ed92626 answered 6 months ago

It's the defective mode door that's keeping coolant from flowing into the heater core. This should have been replaced when they changed the heater core.

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