GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 XLR 🢒 Engine 🢒 Engine Mechanical - 4.4L 🢒 Supercharger Installation

Special Tools

    • EN 46109 Guide Pins
    • EN-47748 Supercharger Lifting Fixture
    • EN-47833 Supercharger Service Holding Fixture

For equivalent regional tools, refer to Special Tools


    Object Number: 1656839 Size: SH
  1. Install the NEW supercharger gaskets.

    2. Object Number: 1676041 Size: SH
  2. Install the 8 mm (0.31 in) EN 46109 pins into cylinder head supercharger mounting bolt holes at opposing corners.

    3. Object Number: 1656785 Size: SH

    Warning: The supercharger must be lifted with the EN 47748. The weight of the supercharger assembly is approximately 34 kg (75 lb) and could cause injury if lifted by hand.

    Caution: The supercharger must be lifted with the EN 47748. Damage could occur to the finish and/or components of the supercharger and surrounding engine or vehicle components.

  3. Lift the supercharger assembly off of the table using appropriate lifting equipment.

    4. Object Number: 1656784 Size: SH
  4. Remove the EN-47833 fixture from the supercharger.

    5. Object Number: 1656838 Size: SH
  5. Install the supercharger using the EN-47748 fixture with appropriate lifting equipment.

    6. Object Number: 1676043 Size: SH
  6. As the supercharger is lowered into place carefully align the EN 46109 pins with the corner mounting holes of the supercharger.

    7. Object Number: 1656837 Size: SH
  7. Remove the EN-47748 fixture from the supercharger.

    8. Object Number: 1676046 Size: SH
  8. Remove the EN 46109 pins .

    9. Object Number: 1656836 Size: SH
  9. Loosely install the supercharger bolts.

    10. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1743702 Size: SH
  10. Tighten the supercharger bolts in sequence as shown. Tighten the supercharger bolts in sequence to 25 N·m (18 lb ft).

    11. Object Number: 1656834 Size: SH
  11. Place the fuel injector rail assembly into position and align each fuel injector with the fuel injector bores in the supercharger.

    12. Object Number: 1656832 Size: SH
  12. Place the fuel injection rail crossover tube into the clip (1) and fasten.

    13. Object Number: 1656829 Size: SH
  13. Install the fuel injection rail studs and tighten to 10 N·m (89 lb in).

    14. Object Number: 1656828 Size: SH
  14. Connect the dirty air positive crankcase ventilation (PCV) tube (1) to the right camshaft cover.

    15. Object Number: 1656824 Size: SH
  15. Install the bracket with sensors and tubes.

    16. Object Number: 1656823 Size: SH
  16. Connect the supercharger inlet absolute pressure sensor vacuum tube connection (1) to the supercharger fitting.

    17. Object Number: 1656821 Size: SH
  17. Connect the manifold absolute pressure (MAP) sensor vacuum tube connection (1) to the supercharger fitting.

    18. Object Number: 1656819 Size: SH
  18. Install the fuel injector sight shield cover ball studs. Tighten the fuel injection sight shield cover ball studs to 10 N·m (89 lb in).

    19. Object Number: 1656879 Size: SH
  19. Install the NEW charge air cooler coolant front manifold O-rings.

    20. Object Number: 1656818 Size: SH
  20. Install the charge air cooler coolant front manifold.
  21. Install the charge air cooler coolant front manifold bolts and tighten to 25 N·m (18 lb ft).

    22. Object Number: 1656816 Size: SH
  22. Install and connect the clean air positive crankcase ventilation (PCV) tube to the left camshaft cover.