2002 Buick Regal Owner's Manual - Page 185

If your vehicle is in cruise control when the traction control system begins to limit wheel spin, the cruise control will automatically disengage. When road conditions allow you to safely use it again, you may reengage the cruise control. See "Cruise Control" in the Index. This light should come on briefly when you start the engine. If it stays on or comes on while you are driving, there's a problem with your traction control system. See "Traction Control System Warning Light" in the Index. When this warning light is on, the system will not limit wheel spin. Adjust your driving accordingly. The traction control system automatically comes on whenever you start your vehicle. To limit wheel spin, especially in slippery road conditions, you should always leave the system on. But you can turn the traction control 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" in the Index. To turn the system off, press the TRACTION button on the panel located directly behind your automatic transaxle shift lever. The traction control system warning light will come on and stay on. You can turn the system back on at any time by pressing the button again. The traction control system warning light should go off. 4-10