Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Body Seal-To-Fender Bracket Clips
    GM750119Courtesy of GENERAL MOTORS CORP.
  1. If replacing the body to fender seal, position the seal to the vehicle.
  2. Ensure that the integral clips (1) on the seal are seated into the fender bracket (2).
  3. Fig 2: Locating Fender Bolts
    GM750116Courtesy of GENERAL MOTORS CORP.
  4. Position the fender to the vehicle.
  5. NOTE: Refer to Fastener Notice in Cautions and Notices.
  6. Install the bolts that retain the fender to the vehicle.

    Tighten:Β  Tighten the bolts to 10 N.m (89 lb in).

  7. Fig 3: Installing Hood Bumpers
    GM742125Courtesy of GENERAL MOTORS CORP.
  8. Install the hood bumper to the vehicle.
  9. Install the rocker panel molding. Refer to Molding Replacement - Rocker Panel (TrailBlazer EXT, Envoy XL) or Molding Replacement - Rocker Panel (TrailBlazer, Envoy, Bravada) in Exterior Trim.
  10. Install the wheelhouse panel. Refer to Wheelhouse Panel ReplacementΒ  .
  11. Install the assist step, if applicable. Refer to Assist Step Replacement in Frame and Underbody.
  12. Remove the protective tape.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.