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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 626 (POWER STEERING SYSTEM)REPAIR INSTRUCTIONSPOWER STEERING PUMP REPLACEMENT (L47)INSTALLATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the power steering pump reservoir to the power steering pump. Refer to Power Steering Reservoir Replacement - Off Vehicle  .
  2. Install the power steering pulley to the power steering pump. Refer to Power Steering Pulley Replacement (LX5)  or Power Steering Pulley Replacement (L47)  .
  3. Install the power steering pump to the vehicle.
    CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  4. Install the power steering pump mounting bolt.

    Tighten 

    Tighten the power steering pump mounting bolts to 25 N.m (18 ft lbs).

    Fig 1: Installing Power Steering Pump
    G01581727Courtesy of GENERAL MOTORS CORP.
  5. Install the power steering return hose to the power steering pump.
    Fig 2: Installing Power Steering Return Hose To Power Steering Pump
    G01581728Courtesy of GENERAL MOTORS CORP.
  6. Install the power steering pressure line to the power steering pump.

    Tighten 

    Tighten the hose to 30 N.m (22 ft lbs).

    7. Fig 3: Installing Power Steering Pressure Line To Power Steering Pump
    G01581729Courtesy of GENERAL MOTORS CORP.
  7. Install the power steering pump pulley to the power steering pump. Refer to Power Steering Pulley Replacement (LX5)  or Power Steering Pulley Replacement (L47)  .
  8. Install the accessory drive belt to the pump. Refer to DRIVE BELT REPLACEMENT in Engine Mechanical-4.0L.
  9. Bleed the power steering system. Refer to Bleeding the Power Steering System .
  10. Inspect the power steering system for leaks. Refer to Power Steering Fluid Leaks .
  11. Remove the drain pan from under the vehicle.
RENDER: 1.0x

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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.