I need to find a vacuum diagram for a 1984 buick lesabre 307. I don
Answers from the Automotive Experts
Dear Steve,
There should be a sticker on the under side of the hood or on the body of the vehicle under the hood that shows the vacuum diagram.
If it's no longer there, then you will need a service manual or someone who has access to Mitchell 1 or Alldata. Usually you have to pay and subscribe to these services, but they should have a diagram.
Lori Johnson