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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1722 (FRAME & UNDERBODY)REPAIR INSTRUCTIONSFRAME SECTIONING - FRONT FULL FRAMEREMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal Procedure
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The re-designed frame assembly for the new S/T Utility is a mild, steel hydroformed frame assembly. A front frame service section consisting of the left and right frame ends, body, and radiator support mounting brackets and front connecting cross tube is available. If damage permits, locate and cut off the front 420 mm (16.5 in) portion of the frame assembly first along the die mark indicators and through the sway bar mounting brackets. The front and rear body mounts, radiator support mounts, sway-bar brackets, steering gear and transmission cross-member can be ordered and replaced separately.

Fig 1: Frame Sectioning - Front Full Frame
GM748641Courtesy of GENERAL MOTORS CORP.
    Fig 2: Removing Sway Bar Brackets
    GM748642Courtesy of GENERAL MOTORS CORP.
  1. Remove all of the related panels and components including the front bumper assembly and the sway bar brackets.
    2. Fig 3: Locate The Two Die-Marks
    GM748643Courtesy of GENERAL MOTORS CORP.
  2. Locate the two die-marks on each frame. The die marks are located 420 mm (16.5 in) rearward from each front frame rail end on the top and bottom side of each rail.
    3. Fig 4: Applying Masking Tape Over Die-Marks
    GM748645Courtesy 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.