I have 07 torrent. Kid has 08 equinox. Same motor. Ac works fine on both cars. But, the equinox cooling fan(s) run max a lot. I can hear fan from inside car. It does it around town and even on highway, I never seem to notice fan sound on torrent. Maybe it runs on med/low most of the time? I drove both today and equinox was on max speed but not 100% of the time. What is making fan run like it does? Which seems to be so loud vs torrent? Shouldn’t both be about the same? As in fairly quiet?
I have no idea. However, I wonder if both have the same manner of insulation on the underside of the hood. If the Torrent has decent insulation under the hood and the Equinox does not, then the Equinox noises will be louder.
Just spitballing there.
There are error codes for fans that are out of whack - so presumably you have no warning lights / codes or you would have said so?
The Equinox radiator may be partially plugged and not cooling as efficiently so the fan has to work harder more often.
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Sounds like a radiator fan motor(s) control module, should be mounted above the smaller fan (upper right corner) if it has one… Can’t seem to find one the couple places I’ve looked, so don’t know even if it has one… I’m sure one of the other Pros will know…
If the (one of the) computers think the vehicle is overheating, then it will command them to run on high all the time… Check live data to see what it is showing with the ECT… A decent scanner should be able to command the fans on low and high also…
It goes without saying to check coolant level and make sure system hold pressure, cap included…
Maybe the Nox has aftermarket replacement fans - noisier than factory?
Measure the rpm of the two vehicle’s fans. That might provide a clue.