GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. The vacuum supply lines and grommet are located next to the engine cover. The lines come through the right side and in the middle of the cowl panel.

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

  5. Object Number: 555542  Size: SH
  6. Remove the vacuum supply lines harness and grommet (1) from the cowl panel by grasping the grommet at the base and pulling rearward.
  7. 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.


    Object Number: 555528  Size: SH
  5. Connect the vacuum supply lines (2) to the vacuum harness in the vehicle.
  6. Confirm vacuum from the vacuum tank outside the vehicle. Vacuum Tank Replacement .
  7. Connect the vacuum supply lines (3) to the cowl panel outside the vehicle.