Ok guys, this is out of the scope of what I can find help with on the regular car forums…
I have a parasitic draw of 4A on my 2009 Cadillac CTSV…
The part that stumps everyone: The car goes to sleep, like normal with a 30mA draw. Then after one hour and 20 mins, something is waking up the BCM causing a 4A draw until the battery dies.
I have replaced and reprogrammed the BCM.
Pulled every fuse and relay
Radio and Amp pull 3A of the 4A
The only fuse that will prevent/stop the drain is BCM 1 fuse
On the BCM with connector X2 unplugged, no drain
A friend of mine said that I may need to figure out a way to monitor and log the low speed CAN to see what module is being kicked on an hour after the car is in sleep
I have a tech2win setup and ACDelco module programming capabilities that I’ve been using, but I do not have what I’d need to read the GMLAN canbus
I have lost sleep with about 80-100 hours trying to figure this out… its very time consuming as every test I do I have to wait a minimum of an hour
I’m not sure if this is even the right community to post this in, if not let me know if you have an idea of where I could go. I am just desperate, Thanks!!