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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1224 (Engine Mechanical - 3.8L (On-Vehicle)) >> Repair Instructions >> Supercharger Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Remove the fuel tank cap and relieve the fuel system pressure before servicing the fuel system in order to reduce the risk of personal injury. After you relieve the fuel system pressure, a small amount of fuel may be released when servicing the fuel lines, the fuel injection pump, or the connections. In order to reduce the risk of personal injury, cover the fuel system components with a shop towel before disconnection. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.
NOTE: 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 negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE .
  2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (L36)  or Fuel Injector Sight Shield Replacement (L67) .
  3. Remove the exhaust gas recirculation (EGR) valve heat shield nut, bolt and the heat shield.
  4. Remove the supercharger drive belt. Refer to Drive Belt Replacement (L36)  or Drive Belt Replacement (L67) .
  5. Remove the right spark plug wires from the ignition module and reposition.
    Fig 1: EGR Heat Shield
    G01703177Courtesy of GENERAL MOTORS CORP.
  6. Remove the generator brace.
  7. Remove the MAP sensor bracket. Refer to MANIFOLD ABSOLUTE PRESSURE SENSOR .
  8. Relieve the fuel pressure. Refer to FUEL SYSTEM PRESSURE RELEASE .
  9. Remove the fuel rail assembly. Refer to FUEL RAIL & INJECTORS .
  10. Remove the boost control solenoid. Refer to BOOST CONTROL SOLENOID .
  11. Disconnect the vacuum lines from the following:
    • Fuel pressure regulator valve
    • Supercharger
    • Supercharger bypass valve
    • Manifold vacuum source
  12. Disconnect the electrical connectors from the following:
    • Supercharger bypass valve
    • Exhaust gas recirculation (EGR) valve
    • EVAP purge solenoid
    • Mass air flow (MAF) sensor
    • Throttle position (T/P) sensor
    • Idle air control (IAC) valve
    • Intake air temperature (IAT) sensor
  13. Remove the accelerator and the cruise control cables with the bracket from the throttle body.
  14. Remove the air cleaner intake duct. Refer to AIR CLEANER INTAKE DUCT .
    Fig 2: Fuel Rail Assembly
    G01703178Courtesy of GENERAL MOTORS CORP.
  15. Remove the supercharger left bolts.
    Fig 3: Supercharger Left Bolts
    G01703179Courtesy of GENERAL MOTORS CORP.
  16. Remove the supercharger right bolts.
  17. Remove the supercharger.
    Fig 4: Supercharger Right Bolts
    G01703180Courtesy of GENERAL MOTORS CORP.
  18. Remove the supercharger gasket.
    Fig 5: Supercharger Gasket
    G01703181Courtesy of GENERAL MOTORS CORP.
  19. Remove the supercharger O-ring seals.
  20. Clean the supercharger mating surfaces.
    Fig 6: Supercharger O-Ring Seals
    G01703182Courtesy of GENERAL MOTORS CORP.
  21. If replacing the supercharger remove the following:
    • Throttle body
    • Positive crankcase ventilation (PCV) valve
    • Supercharger bypass valve
    • Manifold vacuum source
      Fig 7: Throttle Body
      G01703183Courtesy of GENERAL MOTORS CORP.
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