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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1735 (FRAME AND UNDERBODY)REPAIR INSTRUCTIONSASSIST STEP REPLACEMENT (SIERRA PRO)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 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.

Important:  Apply thread locker GM P/N 12345382 (Canadian P/N 10953489), to all bolt threads prior to assembly

  1. Install assist step brackets.
  2. Install the assist step bracket bolts (1).
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install assist step bracket nuts (2).

    Tighten 

    Torque the bolts to 50 N.m (37 lb ft)

    Fig 1: Installing Assist Step Bracket Bolts And Bolt
    G03382381Courtesy of GENERAL MOTORS CORP.
  4. Install the lower body-mount cushion assemblies (2) to the vehicle.
  5. With an assistant, raise the assist step to the vehicle.
  6. With an assistant, install the following:
    1. 6.1. The washers
    2. 6.2. The body mount bolts (1)

      Tighten 

      Torque bolts to 90 N.m (66 lb ft)

      Fig 2: Installing Lower Body-Mount Cushion Assemblies
      G03382382Courtesy 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.