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Chevrolet Cruze Repair Manual: Overlap/Backing Plate Sectioning (Welding)

Chevrolet Cruze Repair Manual / Body repair / Collision Repair / Overlap/Backing Plate Sectioning (Welding)

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

  1. Fit the service panel   to the vehicle to ensure a proper fit.
  2. Measure and mark a line at the sail panel 120 mm (4 3/4 in) from the back glass opening and 70 mm (2 3/4 in) rearward from the rocker panel locating hole edge of the service panel.
  3. Cut along the line to trim the service panel.
  4. Fabricate a 50 mm (2 in) backer plate so that the panel will fit behind the sectioning joint at the sail panel.
  5. Fabricate a 100 mm (4 in) backer plate for the rocker panel.
  6. Drill 8 mm (5/16 in) plug weld holes as necessary in the locations noted from the original panel.
  7. Bevel the sail panel and service panel edges at the sectioned area to approximately 10 degrees.
  8. Grind a 50 mm (2 in) area of the outer surface on the vehicle to remove any corrosion, E-coat, primers, coatings and galvanizing that may be present.
  9. At the section area on the service panel, grind a 50 mm (2 in) area of the back side to remove any corrosion, E-coat, primers, coatings and galvanizing that may be present.
  10. Drill plug weld holes approximately 13 mm (1/2 in) from the edge of the cuts the sectioning areas of the service panel and the original panel.
  11. Prepare all mating surfaces as necessary.
  12. Apply GM-approved weld-thru coating or equivalent to all mating surfaces. Refer to Anti-Corrosion Treatment and Repair.
  13. Position and clamp or screw the backer plate with half of the backer plate exposed at the sectioning joint.

Note: Leave a gap of 1 1/2 times the thickness of the metal at the sectioning joint to the original panel.

  1. Position the service panel to overlap the backer plate and 1 1/2 times the thickness up to the original panel.
  2. Check for proper fit and alignment to the vehicle. Clamp the panels together.
  3. Plug weld the backer plate accordingly.
  4. Stitch weld along the entire sectioning joint, make 25 mm (1 in) welds along the seam with 25 mm (1 in) gaps between them.
  5. Complete the stitch weld.
  6. Clean and prepare all welded surfaces of the entire sectioning joint.

Note: Always follow the system manufacturer's instructions for application, handling, and curing.

  1. Apply a lightweight body filler to the backer plate area.
Collision Repair
Specifications Point-to-point measurements are for reference only. All measurements are given in millimeters. Use these measurements for diagnosing and estimating. Point-to-point measurements ...

Front Bumper Impact Bar Replacement
Removal Procedure Warning: Refer to Approved Equipment for Collision Repair Warning in the Preface section. Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface section. D ...

Other materials:

Storing the Tire Sealant and Compressor Kit
The tire sealant and compressor kit is located in the trunk, under the load floor, behind an access panel. To remove the kit: 1. Open the trunk. 2. Turn the left knob counterclockwise and the right knob clockwise, 90 degrees, at the same time. Then pull the access panel rearward and up to r ...

Removal Procedure
Warning: Refer to Approved Equipment for Collision Repair Warning in the Preface section. Disable the SIR System. Refer to SIR Disabling and Enabling. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection. Remove all related panels and co ...

If the Vehicle Is Stuck
Slowly and cautiously spin the wheels to free the vehicle when stuck in sand, mud, ice, or snow. If stuck too severely for the traction system to free the vehicle, turn the traction system off and use the rocking method. WARNING If the vehicle's tires spin at high speed, they can explode, ...

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