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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1790 (Frame & Underbody) >> Repair Instructions >> Frame Sectioning - Front Full Frame >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Grind the existing frame rail seam to taper seam at a 45° angle.
  2. Prepare all of the attaching surfaces as necessary.
  3. Apply the weld-thru primer to all of the welded surfaces.
    4. Fig 1: Grinding Existing Frame Rail Seam To Taper Seam At 45° Angle
    G03571212Courtesy of GENERAL MOTORS CORP.
  4. Position the service frame section to the existing frame and clamp in place.
    Fig 2: Positioning Service Frame Section To Existing Frame And Clamp In Place
    G03571213Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Check the frame measurements three-dimensionally to ensure proper position of the service frame. Refer to DIMENSIONS - FRAME (TRAILBLAZER, ENVOY, BRAVADA)  or DIMENSIONS - FRAME (TRAILBLAZER EXT, ENVOY XL) 
  5. Continuous-weld the upper and lower horizontal joints from corner to corner.
    Fig 3: Welding Upper And Lower Horizontal Joints From Corner To Corner
    G03571214Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Check the frame measurements three-dimensionally to ensure proper position of the service frame. Refer to DIMENSIONS - FRAME (TRAILBLAZER, ENVOY, BRAVADA)  or DIMENSIONS - FRAME (TRAILBLAZER EXT, ENVOY XL) 
  6. Continuous-weld the inner and outer vertical joints from corner to corner.
    Fig 4: Welding Inner And Outer Vertical Joints From Corner To Corner
    G03571215Courtesy of GENERAL MOTORS CORP.
  7. Position the new sway bar brackets and clamp in place.
    Fig 5: Positioning Sway Bar Brackets And Clamp In Place
    G03571216Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Check the frame measurements three-dimensionally to ensure proper position of the sway bar brackets. Refer to DIMENSIONS - FRAME (TRAILBLAZER, ENVOY, BRAVADA)  or DIMENSIONS - FRAME (TRAILBLAZER EXT, ENVOY XL) 
  8. Continuous-weld the sway bar bracket in place as noted from the original parts.
    Fig 6: Welding Sway Bar Bracket In Place As Noted From Original Parts
    G03571217Courtesy of GENERAL MOTORS CORP.
  9. Clean and prepare all of the welded surfaces.
  10. Install all of the related panels and components.
    Fig 7: Installing All Of Related Panels And Components
    G03571218Courtesy of GENERAL MOTORS CORP.
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