2000 Chevy Venture heat
45

Asked by MikeFerny Jan 21, 2008 at 01:28 PM about the 2000 Chevrolet Venture

Question type: Maintenance & Repair

My Venture blows cold air. It is not the thermostat? How can I tell if it is the heater core or a cracked head?

1 Answer
84,415

littlehorn answered 16 years ago

Have the cooling system pressure tested by a mechanic you trust. This will eliminate the possibility of a cracked head or internal leak. Most likely it is not the heater core, but perhaps a blend door in the system, or an improper mix of antifreeze/coolant. How do you know it is not the thermostat? The climate control systems on newer vehicles are quite complex and you will likely need to have a mechanic diagnose this problem to be certain.

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