2005 Chevy Aveo Temperature gage goes up when A/C is on. What could this be?
Just yesterday I was driving home with my air conditioner on and the temperature gage started to rise and warm air started to blow out with the air conditioner still on. I would turn the AC off and switch the knob to the heat part (even when the heat wasn't turned on) and the temperature gage would go back down to normal. I checked the coolant and that is full. I want to know what it could possibly be before I take it in to get looked at?