GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Chevy C Silverado - 2WD 🢒 Engine 🢒 Engine Controls - 8.1L 🢒 Intake Manifold Assemble

    Object Number: 471015 Size: SH
  1. Apply a very light film of clean engine oil to the purge solenoid seal.
  2. Install the purge solenoid.
  3. Apply thread sealer GM P/N 12345493, (Canadian P/N 10953488), or equivalent to the threads of the purge solenoid bolt.

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the purge solenoid bolt.

    5. Tighten
    Tighten the purge solenoid bolt to 8 N·m (71 lb in).


    Object Number: 471013 Size: SH
  5. Install the purge solenoid vacuum hose.

    6. Object Number: 471009 Size: SH
  6. Install the EGR adapter gasket.
  7. Install the EGR adapter.
  8. Install the EGR adapter nuts.

    9. Tighten
    Tighten the EGR adapter nuts to 22 N·m (16 lb ft).


    Object Number: 471008 Size: SH
  9. Install the EGR valve gasket.
  10. Install the EGR valve.
  11. Install the EGR valve nuts.

    12. Tighten
    Tighten the EGR valve nuts to 22 N·m (16 lb ft).


    Object Number: 471023 Size: SH

    Important: Lubricate the port of the MAP sensor with clean engine oil. Avoid dipping the sensor port directly into the lubricant or using a solid type of lubricant, as they may block the vacuum port signal.

  12. Install the MAP sensor.
  13. Install the MAP sensor bolt.

    14. Tighten
    Tighten the MAP sensor bolt to 12 N·m (106 lb in).


    Object Number: 864813 Size: SH
  14. Lubricate the O-ring seal of the oil fill tube with clean engine oil.
  15. Install the oil fill tube.
  16. Install the oil fill tube bolt.

    17. Tighten
    Tighten the oil fill tube bolt to 12 N·m (106 lb in).


    Object Number: 784330 Size: SH
  17. Install the throttle body gasket.
  18. Install the throttle body.
  19. Install the throttle body nut.

    20. Tighten
    Tighten the throttle body nuts to 10 N·m (89 lb in).