Just keep the reservoir filled to the right line and the cooling system should take care of the air bubbles after a while, provided that the radiator cap is sealed for both pressure AND vacuum.
at the bottom of the fan, between the two fans
near the thermostat housing
metal hose attached to front of water pump
I did it on my 95 cadillac deville(non concours type) Get a manual it gives you a good idea on how to do it. It takes a couple of hours. It is located behind the glove box which has to be removed. Access is from there and from below the dash, take care not to do any damage to the temp control linkage behind the glove box there is a rod that is held on by small plastic arms that can easily break. It is a little difficult to orient the core to come out around the frame of the dash but it does come out. Take care not to damage the new cores cooling fins as you install the new core. Good luck.
the cooling fan relays are behind and below the center of the radiator
Yes, there are bleeder valves for cooling systems for 99 Malibu.
bleeder valve on cooling system
Could be a collapsed lower radiator hose, perhaps a bad thermostat.
in Seville those relays are in under the main fuse center (driver side under the hood) There should be 3 relay...
You will find the knob for the valve on the rear of the radiator, drivers side, bottom. You will need a flashlight. righty tighty lefty loosy
Doesn't have a cooling system bleeder valve.
Dirty or plugged radiator Water pump Defective radiator cap Thermostat Cooling fan not operating hoses collapsing