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 UnderbodyTail Lamp Replacement
Preliminary Procedures
Open and support the rear compartment
lid.
Remove the body side trim panel replacement in order to expose the tail
lamp pocket nuts. Refer to Body Side Trim Panel
Replacement - Left Side.
Tail Lamp Bolt (Qty: 2)
Caution: Refer to Fastener Caut ...
Drunk Driving
Death and injury associated with drinking and driving is a global tragedy.
WARNING
Drinking and then driving is very dangerous. Your reflexes, perceptions, attentiveness,
and judgment can be affected by even a small amount of alcohol. You can have a serious
— or even fatal — collision if you d ...
Installation Procedure
Cut the quarter outer panel in corresponding locations to fit the
remaining original panel. The sectioning joint should be trimmed to
allow a gap of one-and-one-half-times the metal thickness at the sectioning
joint.
Create a 50 mm (2 in) backing plate from the unused portion
&nbs ...