My car keeps running hot I've replaced thermostat,
radiator ,and relays for cooling fan and it still run
hot it runs for about 8 to 9 before running
if there is no emissions comming out of the radiator fill/ cap...check to see if your hoses are not colllasping
If this is a V-6 the overheating can be caused by faulty lower intake manifold gaskets. GM used plastic and rubber LIM gaskets on these engines and after a while the plastic gets brittle and breaks allowing coolant to go into the engine. It's not easy or cheap to change. I have done it in around 12 hours using new Fel-Pro gaskets and a video on youtube.
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