LaCrosse FWD V6-3.0L (2010)
Note: Position aside the master cylinder in an upright position.
11. Without disconnecting the master cylinder brake pipes, remove and position aside the master cylinder (1) and secure with heavy mechanics wire or
equivalent.
12. Inspect the master cylinder O-ring seal for damage and replace, if necessary.
Note: The power vacuum brake booster bolts are captured and withdraw with the power vacuum brake booster assembly.
13. Completely loosen the power vacuum brake booster bolts (1).