BCM location
Le Mans Master
Joined: Oct 2005
Posts: 7,002
Likes: 2,679
A lot of modules don't move from generation to generation unless there is a reason to (as in the location no longer exists).
GM loves to reuse "brackets" which is surprisingly how most modules are actually attached to the car.
GM loves to reuse "brackets" which is surprisingly how most modules are actually attached to the car.
Thread Starter
Burning Brakes
Joined: Feb 2002
Posts: 885
Likes: 18
From: McFarland WI
which I think was relocated to the area in back floor next to the battery?
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
1st Gear
Joined: Jun 2019
Posts: 1
Likes: 0
Hi Elmer - I have a '14 C7 and after a brand new AC/Delco battery being installed at the dealer - the battery is getting drained within hours. I saw that BCM is the problem at times, however are there any other suspected issues with the car that can cause this unusual issue? I did bring it back to thwe same dealer who installed the replacement battery (thinking and hoping) it was a bad cell in a new abttery, however they said after a load test that it was fine. They called GM tech dept and they told them that there was a code update for some area of the car and after applying it - that it should resolve the issue - well NO GOOD, as the battery was almost totally dead by morning the next day.
Can you steer me in any other directions to get this issue resolved?
Thanks,
Mike
PS - happy fathers day if it applies!
Can you steer me in any other directions to get this issue resolved?
Thanks,
Mike
PS - happy fathers day if it applies!
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2nd Gear
Joined: May 2018
Posts: 2
Likes: 1
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
I only know of 1 BCM and it is passenger floor under the carpet. Part numbers change and maybe it has a newer number than what shows on the part?
Elmer
Elmer
2nd Gear
Joined: May 2018
Posts: 2
Likes: 1
I was thinking the same thing with the part numbers possibly being interchangeable but when I installed the new replacement module, absolutely nothing worked on the car, wouldn’t even allow me to start the car.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,955
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Sounds like the dealer gave you the wrong part for your car.
Elmer
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,955
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
By I installed, you mean the dealer installed, correct? The BCM needs to be synched to your car. It is not plug and play.
Elmer