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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1277 (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 2003 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. Thoroughly clean the exterior of the pump (4).
    Fig 1: Locating Power Steering Pump Components
    G01545596Courtesy of GENERAL MOTORS CORP.
  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. Remove the retainer ring from the pump shaft.
    Fig 2: Removing Retainer Ring From Pump Shaft
    G01545597Courtesy of GENERAL MOTORS CORP.
  13. Remove the pump vanes (2) and the pump rotor (1).
    Fig 3: Removing Pump Vanes And Pump Rotor
    G01545598Courtesy of GENERAL MOTORS CORP.
  14. Remove the pump ring (1).
    Fig 4: Removing Pulley And Pump Shaft From Front Housing
    G01545599Courtesy of GENERAL MOTORS CORP.
  15. Remove the pulley and the pump shaft from the front housing.
  16. Remove the pump plate (1).
    Fig 5: Removing Small Plate Seal
    G01545600Courtesy of GENERAL MOTORS CORP.
  17. Remove the small plate seal (2).
  18. Remove the large plate seal (1).
    Fig 6: Removing Large Plate Seal
    G01545601Courtesy of GENERAL MOTORS CORP.
  19. Remove the pump shaft seal from the front housing.
Fig 7: Removing Pump Shaft Seal From Front Housing
G01545602Courtesy of GENERAL MOTORS CORP.
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.