Question about 2004 Chevrolet Cavalier

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How do you flush,refill cooling system - 2004 Chevrolet Cavalier

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  • guitarrie Jul 31, 2009

    My 2004 cavalier has no radiator cap and a pressure over flow tank. No drain plug on radiator that I can find.

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  • Chevrolet Master
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When the engine is cool, open the plastic(black) drain at the bottom of the radiator. I should mention you'll need a drain pan, but, you knew that...lol. If you can jack the rear of the vehicle up a few inches this will help empty certain areas within the engine. Close the drain plug and fill with cool water, " DO NOT" put the radiator cap back on. Start the engine and turn the climate control inside to hot and "heat". Running the engine watch from out side the level will rise and drop when it drops keep adding water until the thermostat opens, you'll know by the temp of the top radiator hose. Let the ngine run for about 10 minutes, then turn off. Later, when cool again, drop the back end of the vehicle to the ground. Open and drain the radiator entirely. Fill with aproppriate amount of anti freeze, 4 cylinder 4 quarts, six cylinder 6 quarts etc. Run engine till warm again and themostat opens fill with remaining water. And top of the over flow tank. Cap off the radiator and you're done. Keep a close eye on the temp for a day just in case there was an air pocket in therre.

Posted on Jul 30, 2009

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