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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 873 (FRONT SUSPENSION SYSTEM)REPAIR INSTRUCTIONSLOWER CONTROL ARM BUSHINGS 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 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Important:  The lower control arm vertical bushing MUST be installed in the same position which it was removed in order to maintain the original vehicle ride, handling and road feel.

  1. Align the flat edge of the bushing flange to the mark in the control arm (1).
  2. Insert the bushing into the control arm.
    Fig 1: Aligning Flat Edge Of Bushing Flange To Mark In Control Arm
    G01499541Courtesy of GENERAL MOTORS CORP.

    Important:  Apply J23444-A  (or equivalent high pressure lubricant) to the threads of the J21474-27. 

  3. Assemble the bushing tools as shown.
  4. Tighten the J21474-4  until the bushing is fully seated in the control arm.
  5. Disassemble the bushing tools.
  6. Install the lower control arm. Refer to LOWER CONTROL ARM REPLACEMENT  .
    Fig 2: Assembling Bushing Tools
    G01499542Courtesy 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.