GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 555528  Size: SH
  1. Disconnect the vacuum supply lines (3) from the cowl panel under the hood.
  2. Disconnect the vacuum supply lines (2) from the vacuum harness in the vehicle.

  3. Object Number: 555542  Size: SH
  4. Remove the vacuum supply lines harness and grommet (1) from the cowl panel by grasping the grommet at the base and pulling rearward.
  5. Remove the vacuum supply harness.

Installation Procedure

  1. Install the vacuum supply harness.

  2. Object Number: 555542  Size: SH
  3. Install the vacuum supply lines harness and grommet (1) to the corner of the cowl panel.
  4. Insert the vacuum supply lines harness and grommet to the cowl panel hole, push inward until fully seated.

  5. Object Number: 555528  Size: SH
  6. Connect the vacuum supply lines (2) to the vacuum harness.
  7. Connect the vacuum supply lines (3) to the cowl panel under the hood.