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To bleed the air out of a Cadillac Northstar cooling system, start by ensuring the engine is cool. Remove the radiator cap and fill the cooling system with the appropriate coolant, then start the engine and let it idle with the heater set to maximum. As the engine warms up, keep an eye on the coolant level and add more if needed. You may also need to open the bleeder valve located on the engine block to release trapped air until coolant flows steadily from it.

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1mo ago

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