Low coolant in coolant recovery tank or radiator or defective sensor
Sounds like the low coolant warning light Check the coolant level
the sensor is faulty. Located half way down the side of the radiator.
you are low on coolant.
Its a bad low coolant sensor. Common on these Chevy models.
The check gage light comes on if the engine coolant temperature is too high , the oil pressure is too low , or the gas gauge is at or near empty
Defective sensor? Usually in coolant recovery trank
Add coolant to the reservoir. If the low coolant light still stays on, replace the low coolant sensor.
If you are talking about the low coolant light then it is just low of coolant. Add coolant to the recovery tank. If you are talking about the coolant temperature light, then the engine is overheating. You may need to have the cooling system serviced. Drain the coolant and flush the system. Install a new thermostat, and add a 50/50 mix of antifreeze and distilled water.
If it is the low coolant light, it may mean your coolant is low. If it is not low, it may be the low coolant light sensor malfunctioning.
Reservoir light? You mean low coolant light. Low coolant level means the reservoir is low of coolant.
Well, the common cause for the light coming on is the radiator is low of coolant. But I assume you have checked the coolant level and it is ok. That being the case more than likely the coolant level sensor is defective and needs replacing. Can also be the problem is in the wiring.
Coolant is low or a sensor malfunction.