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 UnderbodyService
This vehicle may have the new environmentally friendly refrigerant, R1234yf.
This refrigerant has a significantly reduced global warming impact on the environment,
compared to the traditional automotive refrigerant, R-134a. All vehicles have a
label underhood that identifies the refrigerant us ...
Dome Lamps
The dome lamp controls are in the headliner.
(Dome Lamp Override): Press
to turn the lamps off, even when a door is open.
(Door): Press to turn the
lamps on automatically when a door is opened.
(On): Press to turn on the
dome lamps. ...
Front Bumper Energy Absorber Bracket Replacement
Preliminary Procedure
Remove the front bumper fascia opening cover. Refer to Front Bumper Fascia
Opening Lower Cover Replacement
Drivetrain and Front Suspension Frame Bolt Front
Caution: Refer to Fastener Caution in the Preface section.
Tighten
160 N·m (119 lb ft)
Note: Do NOT reu ...