GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 37088-A Fuel Line Disconnect Tool Set
    • Supercharger Lift Fixture Supercharger Lift Fixture

Removal Procedure

  1. Remove the supercharger belt. Refer to Supercharger Belt Replacement.
  2. Remove the barometric pressure sensor. Refer to Barometric Pressure Sensor Replacement.
  3. Remove the fuel injection fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement.

  4. Object Number: 2156737  Size: SH

    Note: 

       • The supercharger, throttle body, fuel injection rail and fuel injectors may be removed as an assembly. If not servicing the individual components, remove the supercharger as an assembly.
       • Cover the inlet area of the supercharger (1) to prevent dirt or debris contamination onto the rotors.

  5. Remove the positive crankcase ventilation (PCV) dirty air hose (1) from the valley cover and supercharger.

  6. Object Number: 2156354  Size: SH
  7. Remove the charge air cooler cover. Refer to Charge Air Cooler Cover Replacement.
  8. Remove the charge air cooler cover seal (3).

  9. Object Number: 2156823  Size: SH
  10. Remove the charge air cooler insulator (1).

  11. Object Number: 2156357  Size: SH
  12. Cover the supercharger rotors area (1) to prevent dirt or debris contamination onto the rotors.

  13. Object Number: 2156748  Size: SH
  14. Remove the supercharger bolts (1).

  15. Object Number: 2156758  Size: SH
  16. Install the Supercharger Lift Fixture to the supercharger (1) and tighten the Supercharger Lift Fixture fixture studs and nuts until snug.
  17. Using a lifting device, remove the supercharger from the engine.

Installation Procedure


    Object Number: 2156983  Size: SH

    Note: 

       • The supercharger, throttle body, fuel injection rail and fuel injectors may be removed as an assembly. If not servicing the individual components, remove the supercharger as an assembly.
       • Cover the inlet area of the supercharger (1) to prevent dirt or debris contamination onto the rotors.

  1. Cover the supercharger rotors area (1) to prevent dirt or debris contamination onto the rotors.

  2. Object Number: 2156758  Size: SH
  3. Install the Supercharger Lift Fixture fixture to the supercharger (1).
  4. Tighten the Supercharger Lift Fixture fixture bolts and nuts until snug.
  5. Using a lifting device, install the supercharger onto the engine. Align the dowel pin at the right front of the supercharger to the cylinder head.

  6. Object Number: 2156748  Size: SH
  7. Apply a 5 mm (0.2 in) band of threadlocker GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the bolts.
  8. Install the supercharger bolts.
  9. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2156871  Size: SH
  10. Tighten the bolts.
  11. 7.1. Tighten the bolts a first pass in sequence to 5 N·m (44 lb in).
    7.2. Tighten the bolts a final pass in sequence to 10 N·m (89 lb in).

    Object Number: 2156354  Size: SH
  12. Install the charge air cooler cover seal (3).
  13. Install the charge air cooler cover bolts (1) and supercharger cover (2).

  14. Object Number: 2156876  Size: SH
  15. Tighten the bolts.
  16. 10.1. Tighten the bolts a first pass in sequence to 5 N·m (44 lb in).
    10.2. Tighten the bolts a final pass in sequence to 10 N·m (89 lb in).

    Object Number: 2156737  Size: SH
  17. Install the PCV dirty air hose (1) to the valley cover and supercharger.
  18. Install the fuel injection fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement.
  19. Install the barometric pressure sensor. Refer to Barometric Pressure Sensor Replacement.
  20. Install the supercharger belt. Refer to Supercharger Belt Replacement.