what is the proper way to bleed a coolant system on a 1997 chevy lumina

1997 CHEVROLET LUMINA
147,000 MILES
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MCMANUS1
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my car runs hot one day fine the next that is why i want to bleed the systems.
Sep 16, 2012 at 6:42 PM
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ASEMASTER6371
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which motor

Roy
Sep 16, 2012 at 6:51 PM
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MCMANUS1
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the motor is 3100 sfi v6
Sep 16, 2012 at 7:01 PM
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ASEMASTER6371
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there is a bleeder valve on the heater hose connection at the top of the motor. it has a 7 mm screw you just loosen to allow the air to escape.

Roy
Sep 16, 2012 at 7:08 PM
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MCMANUS1
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do you need to do this when it is hot or cold
Sep 16, 2012 at 7:13 PM
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ASEMASTER6371
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does not matter

Roy
Sep 16, 2012 at 7:40 PM
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