GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Do not remove the oil plug when the engine is warm. The engine should be cool to the touch approximately 2-3 hours after running. Removing the oil plug at warm engine temperatures can cause hot oil to overflow. This could result in oil loss and possible personal injury.

    Important: A small amount of oil weepage through the front seal of the supercharger assembly, behind the pulley is a normal condition. A buildup of belt dust and/or airborne dust can adhere to the thin oil film, which causes the oil weepage to appear worse than it really is. The supercharger assembly should not be replaced due to the weepage described. However if the supercharger oil is visually dripping or puddling from the supercharger front seal, the supercharger assembly will need to be replaced.

  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .

  2. Object Number: 327848  Size: SH

    Important: To prevent contamination of the supercharger oil, clean the area around the oil fill plug before removing.

  3. Remove the supercharger oil plug (1).
  4. Inspect the supercharger oil level.
  5. • The oil level should reach the bottom of the threads in the inspection hole.
    • The superchargers oiling system holds .24 L (8 oz) of GM P/N 12345982 synthetic oil.

Installation Procedure


    Object Number: 327848  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Important: Ensure the O-ring is in place on the supercharger oil plug (1).

  1. Install the supercharger oil plug (1).
  2. Tighten
    Tighten the supercharger oil plug to 10 N·m (89 lb in).

  3. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .