Grand Prix V6-191 3.1L VIN M SFI (1998)
Vacuum Brake Booster Check Valve: Service and Repair
REMOVAL PROCEDURE
IMPORTANT: The vacuum check valve and the grommet may be inspected and serviced without removing the booster from the vehicle.
1. Disconnect the brake booster vacuum hose (2) at the vacuum check valve (1).
2. Disconnect the brake booster vacuum check valve (3) from the booster (5).
INSTALLATION PROCEDURE
1. Connect the brake booster vacuum check valve (3) to the booster (5).