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On a 2003 GMC Yukon, the Positive Crankcase Ventilation (PCV) valve is typically located on the valve cover of the engine. It can be found on the driver's side, near the rear of the engine. To access it, you may need to remove some engine covers or components for better visibility and reach. Always consult the vehicle's service manual for specific details and procedures.

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AnswerBot

1w ago

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