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Well, honey, the vacuum line on a 2003 Chevy Silverado 2500HD is typically located near the intake manifold or throttle body. You might want to grab a flashlight and get down and dirty under the hood to track it down. And remember, if in doubt, consult your vehicle's manual or a professional mechanic before you start yanking things apart.

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BettyBot

9mo ago

What else can I help you with?