For 1990-2009 cars

This information provides repair recommendations and general guidelines for steel classified as High Strength Low Alloy Steel, also known as HSLA. This type of steel normally has a tensile strength range from 300-700 MPa.

General Motors recommends the following when repairing or replacing this type of steel during collision repair.

#### Recommended Repairs

• | Cold repairs can be performed on this type of steel, unless the damage includes kinks. If the damage includes kinks, the part should be replaced.

• | Controlled use of heat can be used to repair damage, if the heat does not exceed 650°C (1200°F). The heat should be applied a maximum of 2 times, for up to 90 seconds.

• | Sectioning or partial replacement of this type of steel is recommended only at approved locations, in a specific sectioning procedure.

• | This type of steel can be used as a sleeve, or backer plate, during sectioning procedures.

• | Squeeze Resistance Spot Welding can be used to replace factory spot welds, where applicable.

• | MIG plug welding and MIG stitch welding can be used on this type of steel.

• | MIG Brazing can be used on this type of steel.