GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1754508  Size: SH
  1. Install the throttle body duct seal.

  2. Object Number: 1754504  Size: SH
  3. Install the rear air duct.

  4. Object Number: 1754511  Size: SH
  5. Align the tab (1) on the throttle body duct seal with the notch (2) in the rear inlet duct.
  6. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1754503  Size: SH
  7. Tighten the front screw clamp (1) on the throttle body duct seal.
  8. Tighten
    Tighten the screw clamps to 3.25 N·m (29 lb in).

  9. Tighten the rear screw clamp (2) on the throttle body duct seal.
  10. Tighten
    Tighten the screw clamps to 3.25 N·m (29 lb in).


    Object Number: 1754499  Size: SH
  11. Install the inlet duct seals.

  12. Object Number: 1754495  Size: SH
  13. Install and connect the clean air positive crankcase ventilation (PCV) hose to the left camshaft cover fitting.

  14. Object Number: 1754491  Size: SH
  15. Install the front air duct.

  16. Object Number: 1754489  Size: SH
  17. Lift the front of the front air duct in order to access the clean air PCV hose connector at the bottom of the front air duct.
  18. Connect the clean air PCV hose (1) to the front air duct.

  19. Object Number: 1754514  Size: SH
  20. In order to leave clearance for the intake manifold sight shield align the left inlet duct seal and clamps (1) as shown.

  21. Object Number: 1754521  Size: SH
  22. In order to leave clearance for the intake manifold sight shield align the right inlet duct seal and clamps (1) as shown.

  23. Object Number: 1754487  Size: SH
  24. Tighten the front screw clamps (1) on the inlet duct seals.
  25. Tighten
    Tighten the screw clamps 3.25 N·m (29 lb in).

  26. Tighten the rear screw clamps (2) on the inlet duct seals.
  27. Tighten
    Tighten the screw clamps to 3.25 N·m (29 lb in).


    Object Number: 1754483  Size: SH
  28. Install the supercharger inlet duct ballstud nuts.
  29. Tighten
    Tighten the supercharger inlet duct ballstud nuts to 10 N·m (89 lb in).


    Object Number: 1754480  Size: SH
  30. Install and connect the evaporative emissions (EVAP) hose.