Electric Fans - Pin 33
04-08-2009, 02:08 AM
#31
it does now
I am pretty sure the 03 and 04 are the same. I did it on my 04....
Here is the thread.
https://www.performancetrucks.net/fo...ighlight=efans
Hopefully your using EFI Live, cause HPtuners does not have the AC pressure adjust needed to control the second fan correctly....
http://www.hptuners.com/forum/showthread.php?t=8858
Here is the thread.
https://www.performancetrucks.net/fo...ighlight=efans
Hopefully your using EFI Live, cause HPtuners does not have the AC pressure adjust needed to control the second fan correctly....
http://www.hptuners.com/forum/showthread.php?t=8858
04-08-2009, 11:46 AM
#32
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Nonnie, how do you do it on a 99-02? I have the 03+ diagram, but I can't really read it. I have had some 05 fans for like a month just sitting at my brother's house because I have no idea how to hook them up. I want to use both PCM pins because I have the new HPTuners beta version. Please help!
One of my impala fans gave out and I want to step it up to the 34" rad w/ the bigger efans. Would really like to do this right this time around.
04-08-2009, 02:20 PM
#33
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Here are some diagrams I have.
#1 similiar to Nelson Harness
#2 similiar to 05+ Gm Harness
#3 05+ Gm Harness
#4 05+ Gm Harness, I Modified for 2 fuses
The first one uses the ac as a trigger while the other three use the two pin setup. Not sure who uses #2.
#1 similiar to Nelson Harness
#2 similiar to 05+ Gm Harness
#3 05+ Gm Harness
#4 05+ Gm Harness, I Modified for 2 fuses
The first one uses the ac as a trigger while the other three use the two pin setup. Not sure who uses #2.
04-08-2009, 03:11 PM
#34
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Nonnie, how do you do it on a 99-02? I have the 03+ diagram, but I can't really read it. I have had some 05 fans for like a month just sitting at my brother's house because I have no idea how to hook them up. I want to use both PCM pins because I have the new HPTuners beta version. Please help!
Do yall just need the harness info???
I used this diagram.
run the wire thats suppose to go to the AC ground to the PCM pin 33 and activate it in the tune and Vola..
Last edited by nonnieselman; 04-08-2009 at 06:29 PM.
04-08-2009, 03:24 PM
#35
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Thanks man. installing the 34"rad and fans shouldn't be too much of a hassle if at all but wasn't sure how to get them running. I didn't want to use the same wiring as now and have them running constantly. Did you make your own harness or mod one?
We're still trying to figure out if you can use pin 33 on a 99-02 truck...
04-08-2009, 04:35 PM
#37
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I made my own..
you can use Pin 33 and 42....
on EFI Live you go to System > A/C > Parameters
{G0106} A/C Auto Recirculatoin - Fan #2 Control
Then go to System > Fans> Parameters
{G1203} Type of Fans Fitted To vechicle - Series Parallel Fans
This is how the stock Fbody tune is setup..
here is my Fan settings BTW
run the wire thats suppose to go to the AC ground to the PCM pin 33 and activate it in the tune and Vola..
I know HPT is different, but you get the idea?
Last edited by nonnieselman; 04-08-2009 at 06:28 PM.
