GM Service Manual Online
For 1990-2009 cars only

Power Brake Booster Vacuum Check Valve and Hose Replacement 3.5L, 3.9L


Object Number: 1659177  Size: SF

Callout

Component Name

Preliminary Procedures

  1. If equipped with the 3.5L engine, remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  2. If equipped with the 3.9L engine, remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .

1

Brake Booster Vacuum Hose

2

Brake Booster Vacuum Check Valve

Tip
If the vacuum check valve was removed with the hose, a small amount of denatured alcohol can be used as an assembly aid for installing the check valve to the brake booster. Do not use soap.

Power Brake Booster Vacuum Check Valve and Hose Replacement 5.3L


Object Number: 1659177  Size: SF

Callout

Component Name

Preliminary Procedure

Remove the upper intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .

1

Brake Booster Vacuum Hose

2

Brake Booster Vacuum Check Valve

Tip
If the vacuum check valve was removed with the hose, a small amount of denatured alcohol can be used as an assembly aid for installing the check valve to the brake booster. Do not use soap.