The engine compartment fuse block is located on the driver side of the vehicle. Lift off the cover to check the fuses. See Engine Compartment Overview for more information on location.
Notice: Spilling liquid on any electrical components on the vehicle may damage it. Always keep the covers on any electrical component.
Chevrolet Cobalt Owners Manual. Engine Coolant Temperature Warning Light
This light comes on briefly
while starting the vehicle.
If it does not, have the vehicle serviced by the
dealer/retailer. If the system is working normally
the indicator light goes off.
Notice: Driving with the engine coolant temperature
warning light on could cause the vehicle to
overheat. ...