2003 GMC Sierra 2500hd e fan question

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6.0swhatuneed
Posts: 55
Joined: Fri Jul 27, 2012 9:19 pm
Location: Roaring Spring, PA

2003 GMC Sierra 2500hd e fan question

Post by 6.0swhatuneed »

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
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Zach
Posts: 337
Joined: Wed Jun 13, 2012 3:43 am

Re: 2003 GMC Sierra 2500hd e fan question

Post by Zach »

Sorry for the delay, try this.
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6.0swhatuneed
Posts: 55
Joined: Fri Jul 27, 2012 9:19 pm
Location: Roaring Spring, PA

Re: 2003 GMC Sierra 2500hd e fan question

Post by 6.0swhatuneed »

Okay, installed the new tune and pin 33 on my pcm still isn't grounding. Is it possible my pcm won't do this?
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Zach
Posts: 337
Joined: Wed Jun 13, 2012 3:43 am

Re: 2003 GMC Sierra 2500hd e fan question

Post by Zach »

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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6.0swhatuneed
Posts: 55
Joined: Fri Jul 27, 2012 9:19 pm
Location: Roaring Spring, PA

Re: 2003 GMC Sierra 2500hd e fan question

Post by 6.0swhatuneed »

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
Zach
Posts: 337
Joined: Wed Jun 13, 2012 3:43 am

Re: 2003 GMC Sierra 2500hd e fan question

Post by Zach »

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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