GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The vacuum check valve and the grommet may be inspected and serviced without removing the booster from the vehicle.


    Object Number: 176823  Size: SH
  1. Disconnect the brake booster vacuum hose (2) at the vacuum check valve (1).

  2. Object Number: 176828  Size: SH
  3. Pull the brake booster vacuum check valve (3) from the booster (5).

Installation Procedure


    Object Number: 176828  Size: SH
  1. Push the new brake booster vacuum check valve (3) till it is fully seated in the grommet of the booster.

  2. Object Number: 176823  Size: SH
  3. Connect the brake booster vacuum hose (2) at the vacuum check valve (1).