GM Service Manual Online
For 1990-2009 cars only

The STS-V driver can select this optional handling mode by pressing the Traction Control button, located near the shift lever, quickly two times. STABILITY COMPETITIVE MODE is displayed on the Driver Information Center (DIC) when the system is working. Competitive driving mode allows the driver to have control of the power applied to the rear wheels, while the StabiliTrak® system helps steer the vehicle by selective brake application. In competitive mode, the levels at which StabiliTrak is engaged have been modified to better suit a performance driving environment. When the traction control warning light is on, the Traction Control System will not be operating. Adjust your driving accordingly.

When the Traction Control button is pressed again, the Traction Control System will be on. The traction engaged symbol will be displayed briefly in the DIC. See DIC Warnings and Messages for more information.