Check all hoses and connections. Check the cooling system for leaks as described below.
Align the coolant level, start the engine and let it idle.
Install a radiator fluid level gauge on the expansion tank instead of the threaded cap.
A sign of a leak is a decrease in the coolant level.
The cause of the leak may be fluid leaking through external seals or the presence of internal defects, such as a leaking cylinder head gasket, cracks in the cylinder block or cylinder head.
Checking and adjusting the level and concentration of coolant
Check the coolant level when the engine is cold. The coolant level should be between the MAX and MIN marks.
If the level is below the MIN mark, add the required amount of liquid of the appropriate concentration to the tank.
Do not allow the coolant level to exceed the limit.
[Original version of the article on the website «CHEVYMAN.RU»]