Over heating and no heat

Well then if you bled the air out of the cooling system after filling, sounds like the the heater core may be plugged and need to be flushed out or roded out. If the car is not boiling over which it would, then I suspect a temperature sending unit should be replaced. The gauge may be giving a false reading.

Would you know the best way to bled the air out of cooling system ?

Do a "Google" search for bleeding the air out of cooling system for your vehicle.

Or you can do the Google as Bob suggests...

Ok I'll try that and also there's a wire connector to a sensor just sitting there not connected to anything it's right below my break fluid ??

Do you see where it goes? May be for the ABS system. Look for an sensor without a wire to it.

I see no where for it to hook up to where would the abs connector located?

Probably does not connect to anything. Not uncommon. If it plugged into anything it would be right there by the connector.

If none of this works for you the next step would be to have the cooling system pressure tested to find out if there is a bigger problem at hand, in cases like this being a mechanic is like being a detective and the more info u give the better we can help you out. (Exe how many miles r on this car, did it over heat before u changed the thermostat and if so how long was it over heating? Normal operating temp for a gm should be right 210f once above 220f the aluminum will heat up and start to warp if in fact the one or both heads are bad u will need to get the heads changed along with the top end gaskets.

That's what I was thinking and could my water pump cause no heat and over heating

I just add antifreeze in my radiator cap and few bubbles would come up ??

The bleed screw is on top of the thermostat housing.

It's not your water pump. Water pumps don't fail. They either start leaking or they make noise but they always pump.

Okay hey listen everyone thankyou so much for the help I finally have heat and no over heated anymore the problem was air pockets / bubbles in my cooling system had to keep filling radiator and bleed the thermostat that was the reason but like I said thankyou everyone for being here to help me I couldn't have done it with out you I appreciate it a lot((:

Glad you got it fixed.

I have a 07 Pontiac Grand Prix it’s no heat and my car starts getting hot and I have to pull over like 3-4 times before I get to my destination.. There is a new thermostat in my car and it has antifreeze in my reservoir and radiator but it still gets in the red halfway and it’s smoking from the passenger side

Sounds like a blown gasket. If the smoke you mention is actually steam and its coming from the intake area then it can possibly be corrected by adding a couple of units of Bars Leak to the cooling system. When the engine is cool take the radiator cap off and see if its actually full or not. If not, park it facing up hill and fill it slowly, with the engine running. You need to try to get all the air out of the system. There's also a bleeder valve by the thermostat that can be used to release air. Don't do any of this if the engine is super hot or you might get burned. If none of that works then you might have a blown head gasket which is a fairly big repair project. In any event don't drive the car too much like it is or you'll end up overheating to the point where you do major engine damage. If you are i there fixing things also replace the plastic elbows on the passenger side near the firewall that take coolant to the heater core. They like to fail and will leave you stranded by the side of the road. They are very inexpensive.