Chevrolet Trax: Ultra high strength dual phase steel
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:
- Repair of this type of steel is not recommended.
- This type of steel should be replaced at factory joints only.
Sectioning or
partial replacement is not recommended.
- The use of heat to repair damage is not recommended for this type of
steel.
- Stitch welding is not recommended for this type of steel.
- This classification of steel cannot be used as a backing
reinforcement or a
sleeve for a sectioning joint, unless a specific procedure is available.
Recommended Repairs
- Squeeze resistance spot welding can be used to replace factory spot
welds, where applicable.
- MIG plug welding can be used to replace factory spot welds.
- MIG brazing can be used to replace factory spot welds.
ULTRA HIGH STRENGTH STEEL
This information provides repair recommendations and general guidelines for
steel classified as Ultra High
Strength Steel, also know as UHSS. This type of steel normally has a tensile
strength greater than 700 MPa.
This includes the common steel names of:
- Ultra High Strength Steel (UHSS)
- Martensitic Steel (MS)
- Press Hardened Steel (PHS)
- Boron Steel
NOTE:
- Repair of this type of steel is not recommended.
- This type of steel should be replaced at factory joints only.
Sectioning or
partial replacement is not recommended.
- The use of heat to repair damage is not recommended for this type of
steel.
- Stitch welding is not recommended for this type of steel.
- This type of steel can not be used as a backing reinforcement or a
sleeve
for a sectioning joint.
Recommended Repairs
- Squeeze resistance spot welding can be used to replace factory spot
welds, where applicable.
- MIG plug welding can be used to replace factory spot welds.
- MIG brazing can be used to replace factory spot welds.
SPECIAL TOOLS AND EQUIPMENT
SPECIAL TOOLS
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REMOVAL & INSTALLATION
NOTE: Manufacturer's terminology for this filter is passenger
compartment air filter.
CABIN AIR FILTER
Removal & Installation
Fig. 1: Passenger Compartment Air Filter
SEE MORE:
Fig. 7: Disc Brake Pads And Audible Wear Sensors
WARNING: Refer to Brake Dust Warning .
Inspect the disc brake pads at regular intervals, or whenever the tire
and wheel assemblies are removed
from the vehicle.
If replacement is necessary, always replace disc brake pads in axle sets.
Inspect
Repair Procedure
Thoroughly wash the repair area with Liquid Wash and Wax GM P/N 1052870
or the equivalent.
Environmental damage may be corrected. Refer to Environmental Fallout (Acid
Rain), or Rail Dust
Damage Repair.
IMPORTANT: Follow all of the instructions from the manufacturer
of the