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Last year in March I got stranded. From the inside the doors would not open, the start button did not work,
Like it had no power. No accessory mode, no key fob not found on DIC. Nothing .Call a friend and he said to disconnect the battery for 15 mins. He said it’s acting like a security issue. I disconnected the battery and waited . It started right up. Then in August, coming from the beach all the lights lit up on the dash and the windows or doors would not work, but the car drove like normal. Drive 100 miles like this. Got home and read on here to disconnect the top big blue connector on the bcm and reconnect. That worked. Now the car locks me out randomly usually when I shut the car off. When u press the door handle the window indexes but the door will not open. So I have to open the hatch with the key, open the door, and disconnect the battery for it to act normal. This last time I opened the trunk with the car running. Got of the car and it locked me out again. This time I disconnected the big blue connector on the BCM and everything goes back to normal. Now it will lock me out at least once a day randomly. The battery is about a year old and it goes dead in two days so I put a tender on it. Does this sound like a BCM problem?2008 base c6 cammed and supercharged
Sounds more like a "connection" issue possibly...if you know how to do a "terminal tension" or pin drag test as it's commonly called I'd do that first...you may also try to do a "wiggle check" of that connector and see if you can reproduce the issue..the BCM terminals are "micro 64" and VERY small so you don't want to be shoving anything larger in the terminal than that or you'll have more problems...you can buy the correct size terminal tester J35616-64B...sounds like you have a parasitic drain going on... battery goes dead in 2 days ??...that is a pretty decent drain...you should diagnose that FIRST !!...if this electrical testing is over your head seek out an auto electric shop in your area.
Bcm problem
