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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 638 (Engine Mechanical - 4.0L (Unit Repair)) >> Repair Instructions >> Water Crossover Disassemble >> Tools Required

Tools Required

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

J 38816-A  Water Pump Remover/Installer

  1. Remove the heater inlet pipe fitting.
    Fig 1: Removing Heater Inlet Pipe
    G01817083Courtesy of GENERAL MOTORS CORP.
  2. Remove the engine coolant outlet fitting.
  3. Remove the rear lift bracket bolt.
  4. Remove the rear lift bracket.
    Fig 2: Removing Engine Coolant Outlet
    G01817084Courtesy of GENERAL MOTORS CORP.
  5. Remove the EVAP emission canister purge valve bolts.
  6. Remove the EVAP emission canister purge valve.
    Fig 3: Removing EVAP Emission Canister Purge Valve
    G01817085Courtesy of GENERAL MOTORS CORP.
  7. Remove the EGR bracket shield nut.
  8. Remove the EGR bracket shield.
    Fig 4: Removing EGR Bracket Shield
    G01817086Courtesy of GENERAL MOTORS CORP.
  9. Remove the EGR valve bolts.
  10. Remove the EGR valve.
  11. Remove the EGR gasket.
    Fig 5: Removing EGR Valve & Gasket
    G01817087Courtesy of GENERAL MOTORS CORP.
  12. Remove the throttle body bolts.
  13. Remove the throttle body and plenum duct.
  14. Discard the plenum duct, do not reuse.
    Fig 6: Removing Throttle Body & Plenum Duct
    G01817088Courtesy of GENERAL MOTORS CORP.
  15. Remove the accelerator control cable bracket bolts.
  16. Remove the accelerator control cable bracket.
    Fig 7: Removing Accelerator Control Cable Bracket
    G01817089Courtesy of GENERAL MOTORS CORP.
  17. Remove the MAP sensor.
    Fig 8: Removing MAP Sensor
    G01817090Courtesy of GENERAL MOTORS CORP.
  18. Remove the water pump cover bolt and studs.
  19. Remove the water pump cover.
    Fig 9: Removing Water Pump Cover
    G01817091Courtesy of GENERAL MOTORS CORP.
  20. Remove the water outlet bolts.
  21. Remove the water outlet and thermostat.
  22. Remove the water pump cover gasket.
    Fig 10: Removing Water Pump Cover Gasket
    G01817092Courtesy of GENERAL MOTORS CORP.
  23. Remove the water pump and seal using the following procedure:
    1. 23.1. Index the J 38816-A  socket into the water pump.
    2. 23.2. Align the J 38816-A  support plate on the water crossover.
    3. 23.3. Install the J 38816-A  support plate on the water crossover using the water pump cover bolts.
    4. 23.4. Unlock the water pump from the water crossover by turning the J 38816-A  socket clockwise.
    5. 23.5. Remove the J 38816-A  support plate from the water crossover.
    6. 23.6. Remove the J 38816-A  socket.
    7. 23.7. Remove the water pump.
    8. 23.8. Remove the water pump seal and discard.
    Fig 11: Removing Water Pump & Seal
    G01817093Courtesy of GENERAL MOTORS CORP.
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