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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1363 (POWER STEERING SYSTEM)REPAIR INSTRUCTIONSPOWER STEERING PUMP DISASSEMBLEDISASSEMBLY PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Disassembly Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Disassembly Procedure
WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the power steering pump from the vehicle. Refer to Power Steering Pump Replacement .
    2. Fig 1: Power Steering Pump Components
    GM820256Courtesy of GENERAL MOTORS CORP.
  2. Thoroughly clean the exterior of the pump (4).
  3. Remove the bolt and the inlet tube from the pump.
  4. Remove the inlet tube seal from the inlet tube.
  5. Remove the pump fitting from the flow control valve.
  6. Remove the pump fitting seal from the pump fitting.
  7. Remove the flow control valve from the pump.
  8. Remove the flow control valve spring.
  9. Remove the power steering pump pressure switch.
  10. Remove the 4 bolts and the rear pump housing from the front housing.
  11. Remove the pump housing seal.
    12. Fig 2: Removing/Installing Retainer Ring
    GM882808Courtesy of GENERAL MOTORS CORP.
  12. Remove the retainer ring from the pump shaft.
    13. Fig 3: Pump Rotor And Pump Vanes
    GM882795Courtesy of GENERAL MOTORS CORP.
  13. Remove the pump vanes (2) and the pump rotor (1).
    14. Fig 4: Front Housing And Pump Ring
    GM882788Courtesy of GENERAL MOTORS CORP.
  14. Remove the pump ring (1).
  15. Remove the pulley and the pump shaft from the front housing.
    16. Fig 5: Small Plate Seal And Pump Plate
    GM881947Courtesy of GENERAL MOTORS CORP.
  16. Remove the pump plate (1).
  17. Remove the small plate seal (2).
    18. Fig 6: Front Seal And Large Plate Seal
    GM881950Courtesy of GENERAL MOTORS CORP.
  18. Remove the large plate seal (1).
    19. Fig 7: Removing Pump Shaft Seal From Housing
    GM881952Courtesy of GENERAL MOTORS CORP.
  19. Remove the pump shaft seal from the front housing.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.