Car overheating

I replaced 4 belts one hose new water pump and thermostat new brakes and just passed smog. Nothing in warranty! I don't know why the steam is coming out however I did notice water coming from the engine side by where the glove capartment would be. There is a small hole with water coming out I am not sure if there was a plug there or if something is broken. I have never seen it before now. The car overheated in the past but never have I seen steam come into the car from the vents until tonight.

I'm not sure! I only know a little about cars to get by! I heard that a heater core replacement is rather expensive is that true? I have put so much in this car. I just really like it! But now I have had a lot of problems lately I don't know how much more I can sink into this old of a car. Someone told me that a heater core can be bypassed and the car will still work you just can't use your defrost? Is that making any sense to you? Have you ever heard of that?

I appreciate your time and input! Thank you Christine

Thank you for that information! I lady was going by my car when she saw what my car was doing she said that's what happened to my car last month it was a heater core. The company bypassed her heater core she is a senior lady I better advise her it may be unsafe. Thank you very much for your time I guess I will have to take it in tomorrow. I thought if it was something little I may be able to handle it. Not sure about this one? Thanks again Christine :)

Thanks! I shall see what tomorrow brings! Thanks for your help! This was very helpful I feel more comfortable taking the car in now. Thanks again! Christine