Turbocharger Vacuum System
WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
The turbocharger system is provided with its own vacuum supply consisting of a dedicated vacuum pump, driven off the right hand exhaust camshaft, and a vacuum tank which feeds the bypass valves and wastegate actuators. The vacuum tank is used to provide constant vacuum to the turbocharger components under all driving conditions.