94 still overheating w/intake gaskets replaced

Hi I figured this would be a good place to see if I could get my question answered.
I have a 94 grand prix 3.1 and it has about 160k on it and it started to over heat while my fiance was driving it and started to blow cold air. Well we first thought it was the head gaskets but my Dad had them done about 2 years ago so my fiance checked the intake gaskets and those were definately a problem but the car is still overheating. He did a complete oil change after he replaced the gaskets. A friend told him he should do a couple of more oil changes and flush the radiator. Do you think this will clean it out and help stop the over heating? Because it's rediculous to think after 2 years the head gaskets are blown again when it is just an everyday get around car and we are not hard on it at all. We are down to one car so getting this one fixed as soon as posible would help alot. Any help is appreciated!

have the radiator roded or replaced

Make sure you got all the air out of the system. One of the first signs of air is no heat and then you will start to see an overheating problem. There should be a pipe plug on the top of the thermostat housing. If not remove the radiator cap and then run the engine to operating temperature. Once the thermostat opens the coolant will circulate and you should see the level drop slightly. If this doesn't help then you may need to replace the thermostat. Of course having the radiator done won't hurt either.

:banghead: from the miles on the car, if you haven' ever replaced or roded radiator, it's a good bet that it's restricted. all sediment settles to the bottom blocking off flow, when car at operating temp, feel both sides of radiator, top to bottom for any temp difference. seen this many of times, been gm tech for 25trs