Efan troubles.

[Brent5631]

I installed 05+ efans in my 2003 sierra a few days ago. I have been unable to get them to turn on using the pcm. I used a grounded wire and triggered the relays and everything worked great. This is the first time i have tuned the fan tables but i followed other examples here. I was hoping someone could provide some insight or any other ideas why it is not working.
I am going to go double check that the pins are in the correct position now.
thanks

[Brent5631]

Ok guys I cant figure this out. I cant control them even with the scanning software toggling them myself. This is pretty frustrating.

[joecar]

Can you post a diagram of how you wired the fans.

[Brent5631]

I wired it just like the 05+ fans. I got them working. Most of the problem was me being pretty dumb. I did have a wire loose on a relay but I was just used to my 99 where the fans cycled a lot more.Also my dash temp gauge reads higher than it should.
anyway im happy it works now.

[joecar]

Ok cool :cheers: