GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Release the engine wiring harness clip from the power brake booster vacuum pump bracket and position aside.

  2. Object Number: 1733075  Size: SH
  3. Loosen the 2 clamps and remove the charged air hose from the throttle body and the intake air pipe.
  4. Disconnect the power brake booster auxiliary pump electrical connector.

  5. Object Number: 1733082  Size: SH
  6. Release the clamp and disconnect the power brake booster auxiliary pump to brake booster vacuum hose (1).

  7. Object Number: 1733085  Size: SH
  8. Remove the power brake booster auxiliary pump to engine bolt (1).

  9. Object Number: 1733088  Size: SH
  10. Remove the 2 power brake booster auxiliary pump to engine nuts (1).

  11. Object Number: 1733142  Size: SH
  12. Remove the power brake booster auxiliary pump and bracket (1) from the engine.

  13. Object Number: 1733158  Size: SH
  14. Remove the 2 power brake booster auxiliary pump to bracket nuts and bolts, if necessary and remove the pump from the bracket.

Installation Procedure


    Object Number: 1733158  Size: SH
  1. If removed, install the power brake booster auxiliary pump to the bracket.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install power brake booster auxiliary pump bolts and nuts and tighten to 10 N·m (89 lb in).
  4. Position the power brake booster auxiliary pump and bracket to the engine.

  5. Object Number: 1733088  Size: SH
  6. Install the 2 power brake booster auxiliary pump nuts (1) and tighten to 22 N·m (16 lb ft).

  7. Object Number: 1733085  Size: SH
  8. Install the power brake booster auxiliary pump to bracket to engine bolt (1) and tighten to 22 N·m (16 lb ft).

  9. Object Number: 1733082  Size: SH
  10. Connect the brake booster vacuum hose (1) to the power brake booster auxiliary pump and install the clamp.
  11. Connect the power brake booster auxiliary pump electrical connector.

  12. Object Number: 1733075  Size: SH
  13. Install the charged air hose to the throttle body and the intake air pipe and tighten the 2 clamps.
  14. Install the engine wiring harness clip to the power brake booster vacuum auxiliary pump bracket.