GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Open the hood.
  2. Disconnect the wiring harness plug of the vacuum pump.

  3. Object Number: 1998412  Size: LH
  4. Remove the vacuum pump (2).
  5. • Detach the vacuum hose (1).
    • Unscrew the 2 screw connections (3).

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.

  1. Install the vacuum pump.
  2. Attach the vacuum hose.

    Tighten
    Tighten the 2 screw connections to 24 N·m (18 lb ft).

  3. Connect the wiring harness plug.
  4. Close the hood.