serial data a/c request
Thread Starter
Joined: Sep 2004
Posts: 3,147
Likes: 12
From: Downers Grove, IL
serial data a/c request Has anyone with a newer pcm that has the serial data a/c request tried to just hook it up like the express van 12v request to pin 17?
I have an 03 suburban pcm and I`m thinking of giving it a try as HPTuners told me they do not do a/c segment swaps, and no one seems to have found any other solutions. Hopefully they left the programming for either request in the PCM at GM?
I have an 03 suburban pcm and I`m thinking of giving it a try as HPTuners told me they do not do a/c segment swaps, and no one seems to have found any other solutions. Hopefully they left the programming for either request in the PCM at GM?
I tried it, or more accuratley, my tuner tried it, and never did get it to work. I lost count of how many times he tried, swapping files from other tunes, ect. In the end, I just bypassed the PCM all together.
Thread Starter
Joined: Sep 2004
Posts: 3,147
Likes: 12
From: Downers Grove, IL
Thats what I`m up against now, I don`t think it will matter in this conversion for the idle speed as its a stocker. But I will probably end up putting a secondary relay in for the fans if I have to go that route.
I should mention that my electric fan cars, the fans are controlled by the PCM, and also have trinary switches to turn on the fan when the A/C needs them.
