Question about 2004 Pontiac Grand Prix

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Radiator fons #1 and #2 wont come on car is starting to overheat!

If i turn on my a/c both fans will work but if car is under normal operation they dont come on. i changed thermostat and temp sensor checked fuses but have not replaced relays in power distribution center! i tried some old relay fuses and no difference. is there another area i should be looking at? also the check engine light told of thermostat coolant so i changed the above mentioned any other suggestions?

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  • jen007 May 11, 2010

    where do i find this temp sender on block 2?

  • Anonymous Mar 30, 2014

    My aux fans wont kick on when engine begins to overheat. The low setting comes on when a/c is on. I replaced the thermostat and I have proper coolant levels. I just can't figure why the fans wont go to the high setting

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  • 393 Answers

There is another temp sender on block 2 wire sensor that controls fans

Posted on Nov 12, 2008

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