three hoses that run from the top of the tranny down around the tranny and then back up to the engine
on the top of the transmission its on the transfer case with 3 vacuum lines coming out of it.
There are more than 14 vacuum lines on the 1997 GMC. Most of the vacuum lines originate from the air intake system or the transmission.
There are no vacuum lines running to the automatic transmission.
Not all transmissions use a vacuum modulator, so not all transmissions have a vacuume line.
That transmission is all computer controlled. No vacuum lines on it.
Get manual specific to that vehicle and follow vacuum routings
Start with a visual, inspect all vacuum lines for problems.
It depends on which distributor and transmission you have. The stock distributor has one vacuum line going to it. An autostick transmission has one line. If you have a manual transmission and a Bosch 009 distributor like most people do, you have no vacuum lines.
engine vacuum or direct into the intake.
The vacuum lines are on the roof.
Most of the vaccumn lines are located on the engine itself around the intake.
I need a diagram for the vacuum lines on a 2004 Chevy trailblazer