Disconnected Vacuum Tube?

1999 PONTIAC MONTANA
145,000 MILES • 3.4L • 6 CYL • 2WD • AUTOMATIC
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CBASSETT
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  • 2 POSTS
I have this hose coming off the intake manifold that is sucking air in and is not connected to anything. It was originally just draped over the intake manifold, and i found it was disconnected when I was replacing another hose.

There is a check engine light on for P0410 Secondary air injection system, and I am in California.

I am assuming by the diagram below that it is supposed to go to the AIR Vacuum Solenoid Valve? or something related. However, I have no idea where this is or how to get it reconnected to see if that solves the code.

Diagram and Video are attached.
Image & Video (Click to enlarge)
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May 23, 2025 at 1:10 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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CBASSETT
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Here is a better video:

https://x.com/i/status/1925747134541754844
May 23, 2025 at 1:14 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
It says it goes to the vacuum solenoid valve. Can you looks around to see if you can find it, it should be within the distance of the hose. I think it goes to the EVAP canister, here is the location so you can check it out. Check out the images (below). Please let us know what happens.
Image (Click to enlarge)
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May 25, 2025 at 11:39 AM
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