Turn on e-fan using predator

[jshearer]

Mike,
About a month ago, I received a new tune from you guys that would allow me to turn on the electric fans using my predator. I received 2 tunes back from you depending on how i hard wired my fans to get them to work. I've been having problems getting my fans to turn on like they should. I wired the fan harness into pin 42 of the computer but I didn't know if there were some parameters that I needed to turn on inside the predator to enable the fan. Of the two tunes i was sent, 1 refers to using the auxilary hookup for the fan while the other does not. Any help would be appreciated. Thanks!

2003 GMC Sierra 4.8L Manual
u7195 Predator

[Aaronr]

How's wiring harness did you use and what kind of fans did you use.
I had that same problem when Mike wrote my tune the 2nd time.
Are you running 3 relays and using pin 42 turn them on low and then when
The a/c comes on they go high?

[jshearer]

i'm using a wiring harness from nelson performance that has 3 relays, and is connected using pin 42. one fan will come on high when the a/c engages, however, the other fan never turns on. i'm using a pair of ls1 fans. Thanks for your help. It's greatly appreciated!

[mikel]

We need to activate that pin in the tune.
Email me a copy of your stock tune and we can fix it up for you.

Thanks
Mike

[jshearer]

Thanks Mike, I appreciate the things you do for myself and the rest of these guys.

[Aaronr]

i'm using a wiring harness from nelson performance that has 3 relays, and is connected using pin 42. one fan will come on high when the a/c engages, however, the other fan never turns on. i'm using a pair of ls1 fans. Thanks for your help. It's greatly appreciated!

Mike he has the same set as me here is my tune so you can get the info for the electrical fans. Mike hopefully this will help. I know you had the same problem with me.