Programming 03-04 Chevy cooling fans, beginner needs help/clarification

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jasonb45
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Joined: Sat Jan 20, 2024 9:12 pm

Programming 03-04 Chevy cooling fans, beginner needs help/clarification

Post by jasonb45 »

Hello,
I recently picked up electric cooling fans and the wiring harness for my 03 Suburban off an Escalade. Wiring them up wont be a problem but I cannot find a clear explanation of how to reprogram the PCM to operate the fans. I have a Tech 2 and have heard both ways that you can and cant use it to turn on the fans. Could someone break it down for me exactly what needs to be done to reprogram the PCM to operate the fans correctly. Any help will be greatly appreciated. Thank you, Jason
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