vaccum lines

Hi, Does anyone know what the connection below the brake booster connection is for (red circle in photo)? I know the connection near the throttle body (blue circled) is for the charcoal canister. Thanks

Hi guy's this is my 1st post on here so hopefully I've done this right. I've just purchased a 96 VS ute and all the vacuum hoses are off on the back of the control knob and I can't find a diagram to show me what way they connect if someone could post a pic or a diagram that would be much...

Hey everyone, I’ve just recently done a manual swap in my 2002 VY v6 commodore. Started her up and had a rough idle, so I looked for the vacuum lines and found then one running from the throttle body to the back of the heads was off so I put it back on. It made it a little bit better, but I...