You should look under your vehicle while its running. If you haven't noticed a puddle of coolant on the drive way, you may have a bad head/gasket. Does the car smoke? If it does, your head gasket is gone. Check your engine oil. If it looks like muddy water on the dipstick, you've got coolant mixed with the engine oil. If you see coolant on the ground, you may have a bad water pump. First, check your radiator hoses. Remember to check the hoses going into the heater core as well.
takes the heat away from engine low coolant??
Check coolant level Perhaps thermostat is not opening to allow coolant to flow
The engine overheats and parts can melt, crack, even explode (massive expansion due to heat.)
Hard driving can cause an engine to use oil, but not drastically. Coolant level should not be effected unless the engine overheats.
Tough to narrow it down with such little detail, but it sound like your car's thermostat may be malfunctioning and not controlling the temperature correctly.
You have reinstall the head gasket. It has been not tighten enough or damaged. Anyway the replacement was not done properly.
It could be coming from the water pump, or from the bottom radiator hose. If it is the water pump, change it before the engine overheats. If the engine in any GM product overheats, you will likely be installing a new one or rebuilding the old.
Do not have your car on. First step is to make sure your car has enough engine coolant, if you are low, buy some at the store and put it in its proper place for your car(If you do not know where that is then consult your owner's manual for engine or engine coolant.) If that is not the problem, then it is possible that you have a leak somewhere from the coolant container to your engine. Either check for any possible holes or loose connections or take it into an auto repair shop.
You are probably very low on coolant. If so you have a leak somewhere. Have it check by a mechanic now before you damage the engine if you haven't already.
Not a good idea to add water. You should add an engine coolant available from any auto parts store. You should never remove the radiator cap when engine is hot! Wait until the engine has cooled down then remove cap. Fill radiator with engine coolant, replace cap and then refill coolant reservoir. That procedure will get you to a garage where they will find out why it overheated in the first place.
Immediately stop and do not drive the car any longer. Have it towed to your local mechanic and find out why it overheated. Overheating will destroy an engine and one cause is a blown head gasket. Even if you add coolant and can drive the car you should not. If the head gasket is blown, running the engine with coolant mixed with the oil will do serious damage.
bad thermostat, engine coolant temperature sensor(ect). not enough coolant. radiator is pluged up try flushing,or replace radiator.