Have it pressure tested, the intake gaskets have probably failed.
allways add to the overflow bottle not the radiator it is usaly labled on the cap. PS its under the hood
radiator antifreeze coolant.
Remove the coolant from your 1997 Chevy Malibu radiator. Remove the bottom radiator hose. Run water through the top of the radiator allowing it to run out the bottom.
it looks like a radiator with coolant in! it should be red.
no cap, just the coolant tank, add to this to add coolant../
it is low or out off coolant.
Plug at bottom or rear lower section of radiator
the cap is on the coolant surge tank, on side by fender.
Fill the radiator through the coolant resivour, which is on the passenger side engine compartment.
Look on the side of the coolant overflow bottle. There should be a low mark for the coolant for a cool engine, and one for a hot engine.
The radiator drain petcock on a 2007 Chevy Malibu is typically located on the bottom of the radiator, on the driver's side. It is a small valve that allows for draining the coolant from the radiator. To access it, you may need to raise the vehicle and remove any splash shields if present. Always ensure the engine is cool before attempting to drain the coolant.
i have the same car. ya just go ahead and add it to your radiator while running