[lgret13]

the radiator was factory installed, i heard from another buick owner that the coolant might be leaking into this particular engine setup and the head gasket may need to be replaced, sure enough i check the coolant level and it is slightly low (never crossed my mind to actually check the coolant level because always thought if it was low the engine would over heat). i also notice that the heat blew stronger and hotter at higher rpm and the temp gauge increased slightly, seems like there may be a multitude of problems including possible the thermostat. i have a dealer appointment tomorrow, unfortunately unlike the 300c warranty no loaner car (when i had the radiator recall done and pcm flash they gave me a 2004 Grand Cherokee, can't complain about that). we'll see what they find. thanks.