2005 Pontiac Grand Prix Owner's Manual - Page 253

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 2-25. 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, the ETS should always be left on. But the system can be turned off. The system should be turned off if the 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 4-33 and If You Are Stuck: In Sand, Mud, Ice or Snow on page 4-32 for more information. Press the traction control button located on the console to turn the system off. This symbol, along with the message TRACTION CONTROL OFF will display on the DIC for three seconds when the ETS is not on. If the system is limiting wheel spin when the button is pressed, the system will turn off instantly. Press the traction control button again to turn the system on. If there is a problem with the system, the service traction system will also come on in the DIC. See Enhanced Traction System Warning Light on page 3-42. When this warning light is on, the system will not limit wheel spin. Adjust driving accordingly. 4-11