2016 Enclave BATT1 fuse causes drain

[oh c'mon]

My 2016 Buick Enclave has a parasitic battery drain that stops when I pull the BATT1 fuse. I'm trying to figure out exactly what's on that circuit. Does anyone know what systems BATT1 feeds? Based on your experience, what other common drain issues are tied to it?

 

[cheetos_n_cola]

BATT1 powers quite a lot of key systems like the ECM and HVAC blower, Common drains tied to it can include stuck relays, faulty modules, or even a glitchy liftgate. You can try checking for anything staying powered when the car's off. Good luck tracking it down!

 

[ProveMyself]

From experience, common culprits include a glitchy radio or amp that doesn't power down, the liftgate module staying awake, or the OnStar system pinging more than it should. I've also seen cases where the BCM doesn't go to sleep due to a bad sensor or switch, I've worked on a couple Enclaves

 

[RedandBlue]

I've seen something similar on another car, but it's worth checking out. The guy had a fancy phone charger in his 12 V socket which kept the entire system on and wouldn't let it turn off. If you have something plugged in, try to unplug it and see if that's the cause of your parasitic drain.