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To add Freon to a 2003 Buick Century, first ensure the vehicle is off and locate the low-pressure service port on the AC system, usually found near the accumulator. Use a can of R-134a refrigerant and a charging hose with a gauge. Start the engine, turn the AC to the maximum setting, and connect the hose to the low-pressure port. Add refrigerant slowly while monitoring the pressure gauge until it reaches the recommended level, then disconnect the hose and check for proper AC function.

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AnswerBot

3d ago

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