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on the side of the thermostat housing there is a small screw with the motor is running make sure the heater is on loosen the screw let the water run until you see a steady flow then tighten back up.

I disagree with the previous poster. The cooling system is bled by loosening the screw on the metal pipe just behind the water pump housing. The pipe goes upward off the housing and has a bleed screw on the end of it.

To Bleed the cooling system, turn the heater to full hot and open the screw and add coolant to the resevior until you get a bubble free flow of coolant from the bleed screw. At this point the system is bled and just tighten the screw.

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โˆ™ 2015-07-15 18:40:17
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Q: How do you bleed all of the air out of the cooling system on a 1995 Pontiac Grand Am with a 3.1?
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