my 2005 chevy equinox ls keeps overheating while idling. I replaced the thermostat twice in two days and replaced the water pump, but its still overheating. I bled the bleeder system but im not having any luck, i want to make sure its not the head gasket.

 

Replace the coolant lid and make sure the cooling fans are working. Both fans should turn on whenever the A/C is turned on.