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Thanks for you reply.

I will pass it to my tuner regarding the OS. It was a Yukon PCM that had ac on the car.

My A/C works, it' all brand new. turns on and of with the low pressure sensor. It...

hello, thanks for your reply. what do you mean with OS? os from the laptop where hp tuners is on installed?
the fans are working normal, there are 2 fans and they are controlled by the ECU. So when...

thanks for you reply. My tuner has also set the pressure value's. We tried to set them higher and lower, but nothings happens with the fan.
the scanner he use cannot ( or we didn't find it ) read...

hello, thanks for looking in to it. Wierd the link doesn't work:
https://forum.hptuners.com/showthread.php?107002-A-C-install-how-to-set-the-FAN-G20-chevy-Van-LS-swap
this is the tread:
Thread:...

Thanks for your reply.
Indeed, I used the information on the link you send me.
I have a bleu red pcm, so no drive by wire. I have de same low pressure switch as in your second pic.
I used that 12V...

Hello,
i have the same problem. see my thread here:
https://forum.hptuners.com/showthrea...vy-Van-LS-swap

my question is how and were in hp tuners you have to adjust the settings. is there a way...

Hello,
i have the same problem. see my thread here:
https://forum.hptuners.com/showthread.php?107002-A-C-install-how-to-set-the-FAN-G20-chevy-Van-LS-swap
i'm using basacly the same schematic.
my...

Hello,
I?m new to this forum. I?m from Belgium and LS swapped a 1981 G20 chevy van.
ECU: 2001 GMC Yukon 1500 5.3 GM_P01
I installed a Sanden SD5H09 A/C compressor and wired it like this:
...