GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 TrailBlazer - 4WD 🢒 Preface 🢒 Dangers, Warnings, and Cautions 🢒 Roof Outer Panel Replacement

Removal Procedure

    Warning: Refer to Approved Equipment for Collision Repair Warning in the Preface section.


    Object Number: 742019 Size: SH
  1. Remove all of the related panels and components.
  2. Restore as much of the damage as possible to the factory specifications.
  3. Note the location and remove the following as necessary:
    4. • The sealers
    • The sound deadeners
    • The anti-corrosion materials

    Object Number: 742020 Size: SH

    Note: Do not damage any inner panels or reinforcements. Drill through the roof panel only.

  4. Locate and drill out all factory welds. Note the number and location of welds for installation of the service part.

    5. Object Number: 742021 Size: SH
  5. Remove the damaged roof panel.

Installation Procedure

    Object Number: 742024 Size: SH

    Note: In any area with excessive damage, space the plug weld holes every 40 mm (1½ in) apart.

  1. Drill 8 mm (5/16 in) plug weld holes in the service part as necessary in the locations noted from the original panel.

    2. Object Number: 742025 Size: SH
  2. Prepare all of the mating surfaces as necessary.
  3. Apply GM-approved Weld-Thru Coating or equivalent to all mating surfaces. Refer to Anti-Corrosion Treatment and Repair.
  4. Position the roof panel.

    5. Object Number: 742027 Size: SH
  5. Plug weld accordingly.

    6. Object Number: 742028 Size: SH
  6. Clean and prepare all of the welded surfaces.
  7. Apply the following as necessary:
    8. • The sound deadening materials
    • An approved anti-corrosion primer
    • The sealers and refinish as necessary
  8. Install all of the related panels and components.