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 UnderbodyEngine Compartment Fuse Block
To remove the fuse block cover, squeeze the clips and swing it up.
Notice: Spilling liquid on any electrical component on the vehicle
may damage it. Always keep the covers on any electrical component.
Engine Compartment Fuse Block
The vehicle may not be equipped with all of the fuses, relay ...
Radio(s)
: Press to turn the system on and
off. Turn to increase or decrease the volume.
BAND: Press to choose between FM, AM, or SiriusXM®, if equipped.
MENU/SEL: Turn to select radio stations. Press to select a menu.
: Press to seek the previous station
or track.
: Press to seek the next station
...
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 Disabling ...