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To bleed air out of the cooling system on a 2003 Cadillac DTS, start by ensuring the engine is cool, then remove the radiator cap. Fill the radiator with coolant until it's full, and then run the engine with the heater on high until it reaches operating temperature. Keep an eye on the coolant level, adding more as necessary, and watch for air bubbles escaping. Once the bubbles stop, replace the radiator cap and check the level in the overflow tank, topping it off if needed.

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2mo ago

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