GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement.
  2. Disconnect the vacuum pump electrical connector.

  3. Object Number: 1658459  Size: SH
  4. Disconnect the vacuum hose from the vacuum pump.
  5. Remove the vacuum pump retaining bolts.
  6. Remove the vacuum pump from the vehicle.

Installation Procedure


    Object Number: 1658459  Size: SH
  1. Install the vacuum pump to the vehicle.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the vacuum pump retaining bolts.
  4. Tighten
    Tighten the bolts to 3 N·m (27 lb in).

  5. Connect the vacuum hose to the vacuum pump.
  6. Connect the vacuum pump electrical connector.
  7. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement.