Fan noise

Tiny
SAMINOU
  • MEMBER
  • 2012 GMC ACADIA
  • 3.6L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
I can hear a fan noise. This noise can happen when AC is off or on. So I am sure it is not the AC fan. I need your help.
Monday, January 22nd, 2018 AT 10:25 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,577 POSTS
Where do you hear the noise? Inside the car or outside? If it is the cooling fan on the radiator and it is staying on even with a cold engine it could be a faulty coolant temperature sending unit, bad fan controller or faulty fan relay. To actually test them and determine where the fault is you need a scan tool that can read the live data from the sensors and that can activate the fan control relay.
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Tuesday, January 23rd, 2018 AT 9:41 AM

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