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 UnderbodyPower Outlets
The accessory power outlets can be used to plug in electrical equipment, such
as a cell phone or MP3 player.
There is one accessory power outlet located on the center floor console and one
on the rear of the center floor console. These outlets are powered when the key
is in ON/ RUN or ACC/ACC ...
Hood Hold-Open Rod Replacement
Warning: Refer to Hood Hold-Open Device Warning in the Preface section.
Preliminary Procedure
Remove the radiator grille reinforcement support. Refer to Radiator Grille
Reinforcement Support Replacement.
Hood Hold Open Rod Pivot (Qty: 2)
Hood Hold Open Rod
...
Steering Gear Replacement (Hydraulic Power Steering)
Special Tools
EN 45059 Torque Angle Sensor Kit
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Turn the front wheels to the straight forward position and secure the
steering wheel from moving.
Remove the lower steering intermediate shaft bolt (1).
...