2007 Buick LaCrosse Owner's Manual - Page 296

The ETS operates in all transaxle shift lever positions. But the system can upshift the transaxle only as high as the chosen shift lever position, so use the lower gears only when necessary. See Automatic Transaxle Operation on page 114. This light, along with the TRACTION CONTROL OFF message, will display on the DIC for three seconds when the ETS is not on. If there is a problem with the system, the SERVICE TRACTION SYSTEM message will also come on in the DIC. When this warning light is on, the system will not limit wheel spin. Adjust your driving accordingly. To limit wheel spin, especially in slippery road conditions, you should always leave the ETS on. But you can turn the system off if you ever need to. The ETS should be turned off if the vehicle ever gets stuck in sand, mud or snow and rocking the vehicle is required. To turn the ETS on or off, press the ETS button located above the radio. When the ETS is turned off, the ETS warning light will come on along with the TRACTION CONTROL OFF message on the DIC. It will disappear when the ETS is turned back on. If the ETS is limiting wheel spin when the traction control button is pressed, the ETS warning light will come on and the ETS will turn off right away. StabiliTrak® System Your vehicle may be equipped with a vehicle stability enhancement system called StabiliTrak®. It is an advanced computer controlled system that assists you with directional control of the vehicle in difficult driving conditions. StabiliTrak® activates when the computer senses a discrepancy between your intended path and the direction the vehicle is actually traveling. StabiliTrak® selectively applies braking pressure at any one of the vehicle's brakes to help steer the vehicle in the direction which you are steering. 296