I'm not a mechanic but did you check your water level? If your coolant is low it can't be pumped thus it overheats and cold air from the heater is another hint of low coolant level. You may have a slow leak somewhere. Hope this helped.
heater core is shot and you have to get a new one
Sound like your heater core blew out on you
No heat coming from the heater and the car overheating is usually the thermostat stuck closed. The thermostat is supposed to open up at a certain temperature allowing the engine to warm up quickly.
Could you please tell me if a 1997 Chevy Venture has a heater control valve and if possible the location of the valve.
my heater fan in front of my 2004 chevy venture van wont work
Perhaps a bad thermostat and/or a heater core
faulty control valve on heater or air in the lines
1. overheating 2. temperature of engine not coming up in winter 3. poor engine performance 4. low gas milage
no , the heater core provides heat to the interior for the passengers
If you mean engine coolant is getting into the car, the heater core is leaking coolant causing the coolant level to drop and that causes the engine to over heat.
You will need to remove the anti-freeze from your 1997 Chevrolet Venture cooling system. Remove the water lines from the heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
The heater coil is located behind the dash board. You will have to remove the dashboard to get at the heater coil