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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1557 (FRONT SUSPENSION SYSTEM)REPAIR INSTRUCTIONSFRONT COIL SPRINGS 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 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the coil spring and the insulator to the lower control arm.
  2. Raise the transmission jack in order to compress the front coil spring. It may be necessary to use a pry bar in order to guide the lower control arm into position.
    3. Fig 1: Compressing Front Coil Spring
    G01480104Courtesy of GENERAL MOTORS CORP.
  3. Install the front pivot bolt.
  4. Install the rear pivot bolt.
    NOTE: Refer to FASTENER NOTICE .
  5. Install the lower control arm pivot nuts.

    Tighten 

    Tighten the pivot bolt nuts to 145 N.m (107 lb ft).

  6. Lower the jack. Remove the J 23028-15  from the control arm.
  7. Install the front stabilizer shaft link. Refer to Stabilizer Shaft Replacement .
  8. Install the shock absorber. Refer to Shock Absorber Replacement (4WD)  or Shock Absorber Replacement (RWD) .
  9. Install the tire and wheel assembly. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION  .
    10. Fig 2: Install Front & Rear Pivot Bolts
    G01480105Courtesy of GENERAL MOTORS CORP.
  10. Install the engine protection shield, if equipped.
  11. Lower the vehicle.
Fig 3: Install Engine Protection Shield
G01480106Courtesy 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.