2004 Pontiac Grand Prix Owner's Manual - Page 248

The Enhanced Traction 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 2-22. This warning light appears on the instrument panel to indicate that the ETS is not on. 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. 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" under If You Are Stuck: In Sand, Mud, Ice or Snow on page 4-32. To turn the system off, press the traction control button located on the console. This symbol, along with the message TRACTION CONTROL OFF will also display on the DIC for three seconds when the ETS is not active. If the system is limiting wheel spin when you press the button the system will turn off instantly. You can turn the system back on at any time by pressing the button again. See Enhanced Traction System Warning Light on page 3-38. When this warning light is on, the system will not limit wheel spin. Adjust your driving accordingly. 4-12