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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1773 (Frame & Underbody) >> Repair Instructions >> Frame Sectioning - Front Full Frame >> Installation Procedure

Installation 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.
    Fig 1: Grinding Existing Frame Rail Seam To Taper Seam
    GM748652Courtesy of GENERAL MOTORS CORP.
  1. Grind the existing frame rail seam to taper seam at a 45 degree angle.
  2. Prepare all of the attaching surfaces as necessary.
  3. Apply the weld-thru primer to all of the welded surfaces.
  4. Fig 2: Positioning The Service Frame Section To The Existing Frame
    GM748654Courtesy of GENERAL MOTORS CORP.
  5. Position the service frame section to the existing frame and clamp in place.
  6. 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) .
    Fig 3: Welding Upper And Lower Horizontal Joints
    GM748655Courtesy of GENERAL MOTORS CORP.
  7. Continuous-weld the upper and lower horizontal joints from corner to corner.
  8. 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) .
    Fig 4: Welding Inner And Outer Vertical Joints From Corner To Corner
    GM748656Courtesy of GENERAL MOTORS CORP.
  9. Continuous-weld the inner and outer vertical joints from corner to corner.
  10. Fig 5: Positioning New Sway Bar Brackets
    GM748657Courtesy of GENERAL MOTORS CORP.
  11. Position the new sway bar brackets and clamp in place.
  12. 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) 
    Fig 6: Welding Sway Bar Bracket In Place As Noted From The Original Parts
    GM748658Courtesy of GENERAL MOTORS CORP.
  13. Continuous-weld the sway bar bracket in place as noted from the original parts.
  14. Fig 7: Installing Sway Bar Brackets
    GM748659Courtesy of GENERAL MOTORS CORP.
  15. Clean and prepare all of the welded surfaces.
  16. Install all of the related panels and components.