Removal Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Check Valve & Vacuum Brake Booster

Courtesy of GENERAL MOTORS CORP.

Apply the brake pedal several times until the pedal becomes firm to deplete the vacuum reserve in the brake booster.
Remove the check valve (1) from the vacuum brake booster.
Remove the check valve from the vacuum brake booster hose, if necessary.

Fig 2: View Of Vacuum Hose & Intake Manifold Vacuum Port

Courtesy of GENERAL MOTORS CORP.

Remove the vacuum hose (2) from the vacuum port (1) on the LH side of the intake manifold.