Overheating, cooling fans not turning on

Tiny
SCOTT BLUE
  • MEMBER
  • 2000 PONTIAC MONTANA
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 178,000 MILES
I have the vehicle listed above that gets hot and the fans which are new don't come on.I have replaced the radiator and the fans and the thermostat and the coolant temperature sensor, the water pump is about a year old, dose not leak a drop and replaced the 3604 relays. Still no fans. I am thinking it was the PCM fan control all along. What are your thoughts?
Friday, July 16th, 2021 AT 1:22 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

Have you got a chance to check all the wirings?
As you have already changed most of the components, checking all the wiring should be the next step.

https://youtu.be/41GzoW4cR18

I have attached wiring diagrams for your vehicle.

Please let me know if you have any questions.

Thank you.
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Friday, July 16th, 2021 AT 1:41 PM

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