1999 Buick Riviera Owner's Manual - Page 134

yellowblue D If there's a brake system problem that is specifically related to traction control, the traction control system will turn off and the warning light will come on. If your brakes begin to overheat, the traction control system will turn off and the warning light will come on until your brakes cool down. Engine Coolant Temperature Warning Light This light tells you that your engine coolant has overheated or your radiator cooling fan is not working. D If the traction control system is affected by an engine-related problem, the system will turn off and the warning light will come on. If the traction control system warning light comes on and stays on for an extended period of time when the system is turned on, your vehicle needs service. If you have been operating your vehicle under normal driving conditions, you should pull off the road, stop your vehicle and turn the engine off as soon as possible. The "Problems on the Road" section in this manual explains what to do. See "Engine Overheating" in the Index. 2-72