2007 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 254

The ABS warning light should come on briefly when you turn the ignition key to RUN. If the light does not come on then, have it fixed so it will be ready to warn you if there is a problem. Engine Coolant Temperature Gage Traction Off Light If your vehicle has the Traction Assist System, this light should come on briefly when you turn the ignition to RUN. If the light does not come on then, the system may require service. Have it fixed so it will be there to warn you if the system is turned off. If the light stays on, or comes on when you are driving, there may be a problem with your Traction Assist System and your vehicle may need service. When this light is on, the system will not limit wheel spin. Adjust your driving accordingly. United States Canada This gage shows the engine coolant temperature. It also provides an indicator of how hard your vehicle is working. During a majority of the operation, the gage will read 210°F (100°C) or less. If you are pulling a load or going up hills, it is normal for the temperature to fluctuate and approach the 250°F (122°C) mark. If the gage reaches the 260°F (125°C) mark, it indicates that the cooling system is working beyond its capacity. See Engine Overheating on page 502. 254