Vacuum lines assembly diagram needed?

2001 BUICK CENTURY
200,000 MILES • V6 • 2WD
Avatar
DANIELLEE2328
  • MEMBER
  • 1 POST
I changed the thermostat and when putting it back together couldn't remember where all the vacuum lines go, I need to see where they go.
Sep 1, 2023 at 2:37 AM
Advertisement
Avatar
CANNON1349
  • ✓Experienced Mechanic
  • 861 POSTS
Hello,

I attached the possible vacuum diagrams below. Depending on your specific VIN and configuration it may be different so I included both. Let us know if you need anything else!

Thanks for using 2CarPros.com,
William
Images (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Sep 1, 2023 at 11:47 AM
Avatar
NUNEZ DERICK
  • MEMBER
  • 3 POSTS
This is 1996 Buick century limited hose routing diagram added in the car, so. Is this a wrong connection?
Image (Click to enlarge)
Attached Media
Jun 20, 2025 at 11:19 PM
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,051 POSTS
If you are asking if this is wrong for a 2001 then I would say probably it might not be correct.
Jun 22, 2025 at 4:39 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
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.