GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 STS 🢒 Engine 🢒 Engine Mechanical - 4.4L 🢒 Supercharger Inlet Duct Removal

    Object Number: 1688277 Size: SH
  1. Disconnect and remove the evaporative emissions (EVAP) hose.

    2. Object Number: 1688278 Size: SH
  2. Remove the supercharger inlet duct ballstud nuts.

    3. Object Number: 1688279 Size: SH
  3. Loosen the front screw clamps (1) on the inlet duct seals.

    4. Object Number: 1688281 Size: SH
  4. Lift the front of the front air duct in order to access the clean air positive crankcase ventilation (PCV) hose connector at the bottom of the front air duct.
  5. Disconnect the clean air PCV hose (1) from the front air duct.

    6. Object Number: 1688282 Size: SH
  6. Remove the front air duct.

    7. Object Number: 1688283 Size: SH
  7. Disconnect and remove the clean air PCV hose from the left camshaft cover fitting.

    8. Object Number: 1688284 Size: SH
  8. Loosen the rear screw clamps (1) on the inlet duct seals.

    9. Object Number: 1688285 Size: SH
  9. Remove the inlet duct seals.

    10. Object Number: 1688286 Size: SH
  10. Loosen the rear screw clamp (1) on the throttle body duct seal.

    11. Object Number: 1688288 Size: SH
  11. Remove the rear air duct.

    12. Object Number: 1688289 Size: SH
  12. Loosen the front screw clamp (1) on the throttle body duct seal.

    13. Object Number: 1688290 Size: SH
  13. Remove the throttle body duct seal.