heater on my 08 w/6.6 blows only cold air

5

Asked by Oct 08, 2013 at 09:37 AM about the 2008 Chevrolet Express Cutaway 3500

Question type: Maintenance & Repair

the blind door working good seems to get warmer if you turn the temp knob to cold

1 Answer

270

You may have a clogged heater core or your thermostat needs replacing. Another cause for this is the actuator in the dash. They do fail, but rarely.

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