How do you check for vacuum leaks on 2006 silverado?

To check for vacuum leaks on a 2006 Silverado, start by visually inspecting all vacuum hoses and connections for any cracks or disconnections. Use a smoke machine or spray carburetor cleaner around the intake manifold, throttle body, and vacuum lines while the engine is running; if the idle changes, a leak is likely present. Additionally, you can listen for hissing sounds while the engine is idling, which may indicate a leak. Always ensure the engine is cool before working on it for safety.