Battery dead / draining

I have no idea if they need to be reprogrammed if changed. I was looking at another TSB and was thinking if : you have this issues when engine running?

Replaced battery with Autozone 49-DL after placing brand new battery on 48 hour trickle charge,

Then , while GM3 was still removed , drove the car to dealer to have them dx battery drain .

Dealer reported :

Right Front Door Module ( fuse circuit #8 ) was culprit in intermittent battery drain.
Dealer left fuse out for me and I plan to try the RFDM swap in near future.
I pulled all fuses individually at least 3 times in my efforts to isolate the drain . I did not experience the stopping of the drain . Dealer stated that need to wait the 16 minutes for sleep mode . I believe that I did that all 3 times .

Dealer found that GM3 came back to life ; all GM3 systems are back again .
How did that happen?

Dealer also reported 2 codes appeared :
- Adjustable Steering Column : I believe that I do not experience any issues as it still moves up/down and in/out.
Perhaps related to GM3 being out for a while?
- Passenger Seat Occupancy map : causes dash Air bag icon to light up . Dealer said probably due to wear/tear or broken wire connection.

Will monitor drain over several days and report any issues that arise. Hope RFDM is the issue . RFDM is part number : 61 35 6 904 243 , approx $300, plus dealer quoted one hour dealer labor.

Thanks to all who chimed in on this. I continue to learn .

Very interesting. Speechless.At least you know now. Did they rip you off?

I was originally quoted approx 1. 5 hours @ $130 /hour .
They had car at 7:30 AM and took it right away.
I left and surprisingly did not hear from them until the next day just before noon.

I had an extensive conversation with the service agent who seemed to be a reasonable fellow .
After an hour plus at the dealership , we agreed upon $260 plus tax.
This was much better than the original invoice and it required quite a bit of discussion.
We are on good terms and i would go back to them .

I prefer to do the tinkering myself if I can find the how to's... in the forums.

This path was not what I had anticipated .
I felt that isolating the issue would be easy.
Hope that the Dx is correct .

Hope that too. Thanks for sharing the experience.

Im having battery draining issues as well but not the lights and windows dont work issues you are having. Same year and model car.

Interested in what you found out

Regards

I've seen Alternators with shorted diode packs drain batteries. Tried everything else first, then found it to be the Alternator.