What does the LOW-COOLANT indicator light mean in a Buick?

[LeonardoMarie]

LOW-COOLANT is the antifreeze warning light in Buick vehicles. The reasons for this light to illuminate are as follows: 1. There is a leak in the cooling system. For older Buick models, coolant leaks often occur at the connection points between rubber hoses and metal pipes. The causes of leaks are typically due to aging rubber hoses and insufficient clamping force of the hose clamps. When replacing, it's best to change both the rubber hose and the clamp together. 2. Faulty coolant level sensor. 3. Damaged cylinder head gasket. Determining whether the cylinder head gasket is damaged is relatively simple because when it fails, engine oil from the oil passages will mix with coolant from the water passages, turning into a milky white color. This can be seen by checking the oil dipstick or opening the oil filler cap. In this case, a major engine overhaul is required to replace the cylinder head gasket, and components such as cylinder walls and piston rings should also be inspected for wear.