How does 04 GTO PCM turn on A/C
#22
TECH Enthusiast
In relation to this the 04GTO has the low fan turn on through the BCM. It may look like a 04 Express Van OS is the way to go. Hopefully it can be setup to work for the fans also. The rest should be a table conversion from a GTO to the van OS.
#23
I'm using the 2004 Silverado for my swap, same issue low pressure switch and AC request signal go through the BCM. Has anyone found a way to modify this and reprogram the PCM? This is the thread I found with the most info.