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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 626 (POWER STEERING SYSTEM)REPAIR INSTRUCTIONSPOWER STEERING GEAR REPLACEMENTINSTALLATION 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 gear through the left wheel opening.
    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.
  2. Install the power steering gear mounting bolts.

    Tighten 

    Tighten the power steering gear mounting bolts to 95 N.m (70 ft lbs).

    Fig 1: Installing Power Steering Gear Mounting Bolts
    G01581772Courtesy of GENERAL MOTORS CORP.
  3. If equipped, connect the variable effort steering electrical connector.
  4. Install the left stabilizer shaft insulator. Refer to Stabilizer Shaft Insulator Replacement in Front Suspension .
    Fig 2: Connecting Variable Effort steering Electrical Connector
    G01581773Courtesy of GENERAL MOTORS CORP.
  5. Install the power steering pressure hose (2) to the power steering gear.
  6. Install the power steering return hose (1) to the power steering gear.

    Tighten 

    Tighten the power steering pressure and return hoses to 30 N.m (22 ft lbs).

  7. Install the power steering gear heat shield. Refer to Power Steering Gear Heat Shield Replacement .
    Fig 3: Installing Power Steering Return Hose To Power Steering Gear
    G01581774Courtesy of GENERAL MOTORS CORP.
  8. Install the outer tie rods to the steering knuckles.
  9. Install the outer tie rods retaining nuts.

    Tighten 

    Tighten the nuts to 30 N.m (22 ft lbs) plus an additional 180 degrees.

    Fig 4: Installing Outer Tie Rod Retaining Nut
    G01581775Courtesy of GENERAL MOTORS CORP.
  10. Install the intermediate shaft to the power steering gear.
  11. Install the intermediate shaft pinch bolt.

    Tighten 

    Tighten the intermediate shaft pinch bolt to 47 N.m (35 ft lbs).

  12. Install the tires and wheels. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  13. Lower the vehicle.
    Fig 5: Installing Intermediate Shaft To Power Steering Gear
    G01581776Courtesy of GENERAL MOTORS CORP.
  14. Remove the J 42640  from the steering column.
  15. Bleed the power steering system. Refer to Bleeding the Power Steering System .
  16. Adjust the front toe. Refer to Front Toe Adjustment in Wheel Alignment .
    Fig 6: Removing J 42640 From Steering Column
    G01581777Courtesy of GENERAL MOTORS CORP.
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.