2015 Chevy Tahoe: Having same issue, changed temperature sensor, disconnected battery, reconnected battery, temperature reading on gauge, went to lunch, coming back can hear cooling fan running, temperature gauge not reading, get home shut off engine, cooling fan continues running, pull fuses, fan shuts off, reinsert fuses, fan does not come back on....
Cooling fan runs after engine shutdown
- Thread starter Falcon4
- Start date
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Did you see the solutions in the other thread? The thermostat seems to be a major one.
In HP Tuners I can see what temp they are set at......usually self destruct mode from the factory. Temps very high
I set mine to run after shutdown for 3 min to pull off extra heat. If yours are running, you probably have a glitchy sensor that doesn't read correctly on the high end. Fans running after KEY OFF isn't going to hurt a thing until you get it fixed.
I set mine to run after shutdown for 3 min to pull off extra heat. If yours are running, you probably have a glitchy sensor that doesn't read correctly on the high end. Fans running after KEY OFF isn't going to hurt a thing until you get it fixed.
replace the sensor with a new oem one is most likely going to be the solution there is a RASH OF DEFECTIVE ONES OUT THERE, this same exact thing comes up on here once a month like clockwork
Marky Dissod
Full Access Member
GM OE fan-on temp thresholds are part of trying to squeeze out 1 or 2 more MpG.
Hotter motor oil and ATF = less friction = 1 or 2 more MpG.
GM sets fan-on thresholds so high, that every vehicle runs cooler on the highway, even in the desert during the summer.
(This has been true since the early 90s.)
Most tuners just lower the fan-on thresholds so the vehicle's fluid temps in the city are as close as possible to temps on the highway.
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