Question about 2001 Pontiac Grand Am SE

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How do you bleed a cooling system on a 1999 pontiac grand am?

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The most common way to bleed any cooling system in a newer car is take off the radiator cap (cold to warm engine NOT HOT) Start your engine turn your heater on max and let the car warm up I like to put some bounce in it and bounce the car it seems to help work out some air bubbles. as it reaches full oporating temp somewhere in the middle of the gauge start adding coolant along the way to maintain the fluid level at full. carefull to not over fill

Posted on Jul 12, 2010

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Posted on Jan 02, 2017

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SOURCE: location of radiator bleed valve on a 1999 pontiac

Looking at the engine from the front of the car, on the LH side there is a black pipe that comes up from the water pump housing and on top of that is a small screw that will bleed the air in the coolant system.

Posted on May 31, 2010

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SOURCE: 1999 grand am 3.4l keeps getting air into cooling

It may have a blown head gasket, may have a shop test it to confirm.

Posted on Jul 29, 2009

ftw1952
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SOURCE: how do you bleed air pockets out of cooling system in 99 grand am

If a valve is expose on the upper heater hose piping crack that open only when the engine is warmed up for at least 15 minutes. If no valve is seen you will need to loosen one of the heater hose clamps ever so slowly to let the air out. The process to loosen the clamp is not recommended unless you do this first..... When the engine is COLD loosen a hose clamp and remove the hose and put it back on. Thighten the hose clamp snug only. The start the engine to warm up. In about three minutes see if you can twist the hose to move on the fitting. If you can snug the clamo a lttle more and check again. You do not want the hose to come off if too loose. Now that the engine is warmed up for 10 to 15 minutes shut OFF the engine and barely loosen the same clamp 1/4 turn at a time until coolant trickles out. Listen carefully for air escaping too. Air pressure does built up only when the engine gets hot and the air pocket does not move when the engine was cold with the hose removed beforehand. If no air was released upon this proceedure you have a blockage in your system and flushing maybe the only other option using pressure instead forcing the coolant out. Get a can of coolant flush before the power flush proceedure. A radiator pressure tester can be used to power flush with an air fitting adapter installed in place of the guage

Posted on Mar 28, 2010

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2003 pontiac grand am bleeding the cooling system


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