2008 Chevrolet Impala Owner's Manual - Page 160

Traction Control System (TCS) Warning Light This warning light should come on briefly when the engine is started. When the system is active, the light will flash while the system is limiting wheel spin or assisting you in controlling the vehicle. You may also feel or hear the system working. This is normal. See Traction Control System (TCS) on page 4-6 and DIC Warnings and Messages on page 3-52 for more information. Electronic Stability Control Indicator Light If the warning light does not come on then, have it fixed so it will be ready to warn you if there is a problem. If it stays on, or comes on when you are driving a SERVICE TRACTION CONTROL message will appear in the Driver Information Center (DIC). This indicates that there may be a problem with your traction control system and your vehicle may need service. When this warning light is on and the SERVICE TRACTION CONTROL message appears on the DIC, the system will not limit wheel spin. Adjust your driving accordingly. If the traction control system is manually turned off, this light will come on and the TRACTION CONTROL OFF message will appear on the DIC. This warning light should come on briefly when the engine is started. If the warning light does not come on then, have it fixed so it will be ready to warn you if there is a problem. This light may come on after you first start to drive and the STABILITRAK NOT READY message will appear in the Driver Information Center (DIC). See Electronic Stability Control on page 4-7 for more information. 3-36