'95 GMC Z71. Losing coolant fairly fast. Have checked hoses for leaks and found nothing. Cant see any leaks in the radiator itself but not for sure. Any advice? Thanks

Hi, maybe you have a faulty water pump or gasket, it's better that a mechanic check it as soon it's possible.

The overheating probably came from the coolant being too low. The coolant in the reservoir won't go back into the radiator if the coolant in the radiator is too low. Until you get it fixed, check and fill up the radiator every time you want to use it. Overheating is very bad for engines and can cause expensive engine repairs.
Where is it leaking, from the engine or the radiator? You didn't say, but wherever it is leaking is the place to start. If at the radiator, and it is not a loose or leaking hose, I would be looking for a new radiator. If it is leaking at the front of the engine and dripping down from there, you could have a bad water pump. This could be an expensive repair at a shop-not the pump itself-they are not too expensive-but the labor cost in replacing a water pump will add up.

The thermostat would not cause it to leak. But when all is said and done, you will want a new thermostat, after the leak is fixed. They are very cheap and it is just good insurance.

well could be the radiator, or a hose, you will have to remove the fan shroud to inspect. taht tipe of problems have to be fixed the soon the better or damage to the engine could happen.

Is it a slow leak or fast leak? The first thing you need to do is determine where the leak is coming from. Look at the radiator hose ends, the radiator itself, the thermostat housing, the heater core hoses, the water pump housing, just anywhere coolant would go. Once you've found it, get back to me.

If you are losing coolant first get a pressure tester and find out if your your system is losing pressure, if so look at your water pump to make sure it not leaking. it has a weap hole on it, you might check your heater core to make sure it not leaking, it will some times make a smell in your car if it leaks.Next check all your hoses and radiator cap. I hope maybe i helped you a little

since this vehicle has a thermal clutch fan I'd start there

are ALL the hoses getting hot?

• upper rad hose
• lower rad hose
• heater hoses

does the overheating reduce when you turn on the heat at full speed

take it to a mechanic. It's either the radiator itself which is coroded, or it's another hose. It could also be the water pump. If it's any of these, you would be better off having it diagnosed, and then ordering the parts online yourself. YOu can cut the cost in half!

Try replacing the radiator cap. when they get old they let coolant out before it gets hot, a new one should fix the problem.

Cheers, Timo.

check for leaks outside the car around the radiator and hoses if nothing is found there you'll probably need a heater core

if there are no leaks for sure and you are consuming coolant, you make look into the possibilty of a blown headgasket. esp. if it has overheated in the past.