2005 Chevrolet Impala Owner's Manual - Page 214

The traction control system operates in all transaxle shift lever positions. But the system can upshift the transaxle only as high as the shift lever position you've chosen, so you should use the lower gears only when necessary. See Automatic Transaxle Operation on page 2-24. When the system is on, this warning light will come on and stay on to let you know if there's a problem. To turn the system on or off, press the traction control button located on the left side of the instrument panel. When you turn the system off, a chime will sound, the traction control warning light will come on and stay on and a TRACTION CONTROL OFF message will appear on the DIC. If the traction control system is limiting wheel spin when you press the button to turn the system off, the warning light will come on and the system will turn off right away. You can turn the system back on at any time by pressing the button again. The traction control light should go off. Adding non-GM accessories can affect your vehicle's performance. See Accessories and Modifications on page 5-3 for more information. A SERVICE TRACTION CONTROL message will also appear on 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 traction control system on. But you can turn the system off if you ever need to. You should turn the system off if your vehicle ever gets stuck in sand, mud or snow and rocking the vehicle is required. See Rocking Your Vehicle to Get It Out on page 4-29 and If Your Vehicle is Stuck in Sand, Mud, Ice or Snow on page 4-28 for more information. 4-10