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 UnderbodyFront Lower Control Arm Bushing Replacement
Preliminary Procedure
Raise and support the vehicle. Refer to Lifting and Jacking the
Vehicle.
Remove the tire and wheel. Refer to Tire and Wheel Removal and
Installation.
Remove the lower control arm. Refer to Lower Control Arm Replacement.
Lower Control Arm Rear Bushing ...
Seat Adjustment
WARNING
You can lose control of the vehicle if you try to adjust a driver seat while
the vehicle is moving.
Adjust the driver seat only when the vehicle is not moving.
To adjust a manual seat:
1. Pull the handle at the front of the seat.
2. Slide the seat to the desired position and release ...
Floor Air Outlet Replacement
Removal Procedure
Remove the instrument panel assembly. Refer to Instrument Panel
Assembly Replacement.
Remove the instrument panel wiring harness (2) from the instrument panel
tie bar (1).
Disconnect the electrical connectors.
Remove the instrument panel tie bar ...