Vacuum hose routing
Thread Starter
1st Gear
Joined: Jan 2026
Posts: 1
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From: Poulsbo Wa
Vacuum hose routing
I have pulled the intake manifold on my 2002 C5 to replace the the oil pressure sensor. On the back of the manifold where the brake booster hose attaches there is a vacuum hose port that did not have hose attached to it does anyone have a diagram showing routing ?
Melting Slicks
Joined: Sep 2008
Posts: 3,133
Likes: 802
From: Espanola New Mexico
That hose goes down to a vacuum canister underneath the battery, and then a small diameter hard plastic line from the canister is routed with a wire harness that heads into the interior. This vacuum line is used for the hvac system to control where the air is directed to, floor, vents, and defroster.
PS You might want to add a small length of vacuum hose to reconnect that line when you reinstall the intake, been there done that.
PS You might want to add a small length of vacuum hose to reconnect that line when you reinstall the intake, been there done that.
