GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1582090  Size: SH
  1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  2. Disconnect the intake manifold tuning valve electrical connector (1).
  3. Remove the engine harness clip from the power steering reservoir bracket.
  4. Remove the power steering pump. Refer to Power Steering Pump Replacement .

  5. Object Number: 1557831  Size: SH
  6. Remove the intake manifold tuning valve bolts.
  7. Remove the intake manifold tuning valve.

Installation Procedure


    Object Number: 1580024  Size: SH
  1. Apply lubricate GM P/N 1051344 (Canadian P/N 993037) to the nose of the valve blade (1).
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1557831  Size: SH
  3. Install the intake manifold tuning valve.
  4. Install the intake manifold tuning valve bolts.
  5. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  6. Install the power steering pump. Refer to Power Steering Pump Replacement .

  7. Object Number: 1582090  Size: SH
  8. Install the engine harness clip to the power steering reservoir bracket.
  9. Connect the intake manifold tuning valve electrical connector (1).
  10. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .