What could make a car to overheat?
my 2000 Chevy Monte Carlo is having overheating issues. There is not heat when you turn the heater on. Ive replaced the water pump, thermostat, and radiator. Ive flushed the system out a couple times.I then took it for a test drive no sooner then 8 mins into the drive it started to overheat again. There is not a visible leak on the ground, but the coolant does get low. I checked the oil and there is no change to the oil level or color.