Vintage air question

[orngsikL]

So I’ve got it figured out and working on a Gen 4 swap with an e38.

Trucks and van OS used the ac control panel head to send a signal to the bcm and canbus to tell the ECM when the ac was on. Without this setup, the truck and van OS will not read the ac pressure transducer.

Now on the Camaros, it doesn’t use this setup. All they have is a pin on the J1 connector that is a 5v ref, that goes to the ac pressure transducer and send the info back to the ecm. So you have to use a camaro OS to make it work. Find a compatible camaro OS that is also comparable with your TCM. You will also have to run a camaro accelerator pedal to use the camaro OS.

It works. You then use the ac high side pressures to control when the fans come on. Got mine setup and finished today.
Shoot me a email if you need some help.
Nick
C10clubLA@gmail.com