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Why can't I find vacuum diagrams in Haynes?

My '00 Silhouette - bought the Haynes manual for it - and if the vacuum diagrams are in there I can’t find them. (Whole chapter on wiring though).



Anyone know if Haynes don’t include these? Or if I’m missing them? Or where I might be able to find them - I have searched the i’net & haven’t come up with them.

BTW: have already tried the autozone site as well.

The emission sticker under the hood should reflect all vacuum circuits used on the engine.

Tester

No separate chapter on vacuum systems in this Haynes.

The ones who MAY have a link to possible vacuum diagrams would be OK4450, Hellokit and other techs.

Which vacuum system are you looking for? PVC`s are a vacuum system for one.

(I have an '00 Silo too)

P 2B-4 in the Haynes manual #38066 shows Vacuum gauge diagnostic checks.

Like Tester said, Emissions (EVAP) sticker is the only one I have under my hood too.

Tester said

The emission sticker under the hood should reflect all vacuum circuits used on the engine.
…I’ll just add that is true for all makes and models.

Doh! (forehead smack) It is indeed under the hood - thanks!

The only manuals I’ve seen that have vacuum diagrams or complete electrical schematics are the shop manuals.