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2003 GMC Sierra 2500hd e fan question

Predator support for GM gas vehicles

Moderators: mikel, 06MonteSS

Post Fri Jul 04, 2014 9:03 am

Posts: 55
Location: Roaring Spring, PA
Hi, you guys set up my electric fans on my Sierra. They don't want to come on with the a/c at all. You did tell me it was all set at stock value. I installed the stock tune and started fresh with everything and it still doesn't want to work. I'll post up my tune and hopefully you guys can help me.

Thanks,
Roman
Attachments
AR12579405CUA_custom.grg
(6.25 KiB) Downloaded 95 times
ar12579405cua.grg
(312.11 KiB) Downloaded 94 times
ar12579405cua_fans.grg
(248.1 KiB) Downloaded 94 times
Shootin for the moon


Posts: 337
Sorry for the delay, try this.
Attachments
ar12579405cua_fans2.grg
(248.1 KiB) Downloaded 97 times
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Posts: 55
Location: Roaring Spring, PA
Okay, installed the new tune and pin 33 on my pcm still isn't grounding. Is it possible my pcm won't do this?
Shootin for the moon

Post Thu Jul 10, 2014 12:13 pm

Posts: 337
Everything is set up in the tune just as a factory e fan vehicle would be. If you're still having issues with it I would suggest maybe going to a standalone fan controller.
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Posts: 55
Location: Roaring Spring, PA
I've done some research and apparently have some pressure issues with my truck, so off to the a/c man to get it fixed. I do appreciate your help, definitely love what the tuner has done for my truck.
Shootin for the moon


Posts: 337
6.0swhatuneed wrote:
I've done some research and apparently have some pressure issues with my truck, so off to the a/c man to get it fixed. I do appreciate your help, definitely love what the tuner has done for my truck.



Glad you hear you're loving the tuner, let me know if I can help any further.
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