Overheating, cooling fans not turning on

2000 PONTIAC MONTANA
178,000 MILES • 3.4L • V6 • 2WD • AUTOMATIC
Avatar
SCOTT BLUE
  • MEMBER
  • 1 POST
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?
Jul 16, 2021 at 1:22 PM
Advertisement
Avatar
SQM
  • CERTIFIED EXPERT
  • 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.
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Attached Media
Jul 16, 2021 at 1:41 PM