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In addition to the previous issues, I also noticed the red door lock indicator LEDs were on even when the car was locked and in sleep.
I got the car back from the dealer. After all their testing, they found a 400 mA draw and narrowed it down to the human machine interface (hmi) module. I was told factory spec for power draw is 18 mA or less. GM suggested they reset this module to factory before trying to replace. They reset to factory and testing seemed to be going well. However, while setting up the test equipment for a weekend draw test, the tech noticed a flicker on the screen. He tested the draw and found 400 mA again. At this point they decided to replace the hmi module. After replacement they were measuring 7 mA draw. I now have the car back and everything seems to be fine. I noticed the red door lock lights are off when the car is in sleep and there is no more screen flicker.
After reading several other bad battery posts and power draw posts I am wondering if this could be the culprit in many of these cases.
Hopefully this info helps.
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