What tells the cooling fan to come on

Tiny
SCHLATERS
  • 2008 CHEVROLET EQUINOX
  • 68,000 MILES

What sensor tells the engine cooling fans to kick on, or should I say what sensor tells the PCM to trip the relays on a 2008 Equinox 3.4 ltr engine? Both fans not running, gauge on dash in red, not steaming, no bells, lights or whistles. I tested the relays and they are fine.

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Tuesday, September 6th, 2011 AT 5:13 PM

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Tiny
RASMATAZ
  • MEMBER

The engine coolant temperature sensor

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Tuesday, September 6th, 2011 AT 5:26 PM

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