Supercharger: Service and Repair

Removal Procedure

Caution: Relieve the fuel system pressure before servicing fuel system components in order to reduce the risk of fire and personal injury. After relieving the system pressure, a small amount of fuel may be released when servicing the fuel lines or connections. In order to reduce the chance of personal injury, cover the regulator and the fuel line fittings with a shop towel before disconnecting. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.

Notice: Servicing of the supercharger unit itself is limited to replacement only. No attempt should be made to disassemble the supercharger, as parts damage may result.





1. Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Service Precautions.
2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (L67 (VIN 1)).
3. Remove the Exhaust Gas Recirculation (EGR) valve heat shield.
4. Depressurize the fuel system. Refer to Fuel Pressure Relief Procedure in Powertrain Management.
5. Remove the supercharger drive belt. Refer to Drive Belt Replacement (L67 (VIN 1)).
6. Disconnect the right (rear) spark plug wires from the ignition module and set the spark plug wires aside. Refer to Spark Plug Wire Harness Replacement in Powertrain Management.
7. Remove the generator brace. Refer to Generator Brace Replacement (3800 L67 (VIN 1) Rear) in Starting and Charging.
8. Disconnect the electrical connectors from the fuel injectors. Refer to Fuel Injector Replacement in Powertrain Management.
9. Remove the MAP sensor bracket. Refer to MAP Sensor Replacement (VIN 1) in Powertrain Management.
10. Disconnect the fuel lines. Refer to Fuel Hose/Pipes Replacement (Filter to Engine) in Powertrain Management.





11. Remove the fuel rail mounting bolts and the fuel rail with the fuel injectors. Refer to Fuel Rail Assembly Replacement (VIN 1) in Powertrain Management.
12. Remove the boost control solenoid. Refer to Boost Control Solenoid Replacement in Powertrain Management.
13. Disconnect any upper vacuum connections, as required.
14. Disconnect any electrical connectors, as required.
15. Remove the throttle control and cruise control cables with the bracket. Refer to Accelerator Controls Cable Bracket Replacement in Powertrain Management.
16. Carefully remove the throttle body air inlet duct.





17. Remove the supercharger left bolts.





18. Remove the supercharger right bolts.
19. Remove the supercharger.





20. Remove the supercharger gasket.





21. Remove the supercharger O-ring seals.
22. Clean the lower intake manifold-to-supercharger mating surfaces.





23. If replacing the supercharger, remove the throttle body. Refer to Throttle Body Assembly Replacement in Powertrain Management.

Installation Procedure





1. If removed, install the throttle body to the supercharger. Refer to Throttle Body Assembly Replacement in Powertrain Management.





2. Install the new supercharger O-ring seals.

Important: Do not use any sealer on the gasket.





3. Install the new supercharger gasket.
4. Install the supercharger.





5. Loosely install the supercharger right bolts.





6. Loosely install the supercharger left bolts.

Notice: Refer to Fastener Notice in Service Precautions.

7. Install the supercharger bolts.
Tighten the supercharger bolts to 23 Nm (17 ft. lbs.).
8. Carefully install the throttle body air inlet duct.
9. Install the throttle control and cruise control cables with the bracket. Refer to Accelerator Controls Cable Bracket Replacement in Powertrain Management.
10. Connect any upper vacuum connections, as required.
11. Connect any electrical connectors, as required.
12. Install the boost control solenoid. Refer to Boost Control Solenoid Replacement in Powertrain Management.





13. Install the fuel injectors with the fuel rail. Refer to Fuel Rail Assembly Replacement (VIN 1) in Powertrain Management.
14. Connect the fuel lines. Refer to Rue/ Hose/Pipes Replacement (Filter to Engine) in Powertrain Management.
15. Install the MAP sensor bracket. Refer to MAP Sensor Replacement (VIN 1) in Powertrain Management.
16. Connect the electrical connectors to the fuel injectors. Refer to Fuel Injector Replacement in Powertrain Management.
17. Install the generator brace. Refer to Generator Brace Replacement (3800 L67 (VIN 1) Rear) in Starting and Charging.
18. Connect the right spark plug wires to the ignition module. Refer to Spark Plug Wire Harness Replacement in Powertrain Management.
19. Install the supercharger drive belt. Refer to Drive Belt Replacement (L67 (VIN 1)).





20. Install the Exhaust Gas Recirculation (EGR) valve heat shield
21. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (L67 (VIN 1)).
22. Connect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Service Precautions.