This information provides repair recommendations and general guidelines for steel classified as Ultra High Strength Dual Phase Steel (Dual Phase Steel with a tensile strength greater than 800 MPa), also known as DPX.
General Motors recommends the following when repairing or replacing this type of steel during collision repair.
Note:
Recommended Repairs:
Special Tools and Equipment

Mild Steel
Frame and UnderbodyRemote Keyless Entry (RKE) System
The Remote Keyless Entry (RKE) transmitter may work up to 60m (195 ft) away from
the vehicle.
RKE Transmitter with Remote Start Shown
Press the key release button to extend the key blade. The key can be used for
the ignition and all locks.
Press to unlock the driver door
or all doors.
P ...
Removal Procedure
Warning: Refer to Approved Equipment for Collision Repair Warning in the
Preface section.
Warning: Refer to Collision Sectioning Warning in the Preface section.
Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface section.
Disable the SIR System. Refer to SIR Dis ...
Installation Procedure
Drill 8 mm (5/16 in) for plug welding along the edges of the drivetrain
and front suspension frame front support as noted from the
original panel.
Clean and prepare the attaching surfaces for welding.
Position the drivetrain and front suspension frame front suppor ...