2020 Yukon XL Denali Mysterious Intermittent Battery Drain

NorCal Tahoe

TYF Newbie
Joined
Sep 25, 2012
Posts
1
Reaction score
0
Hi,
I have a 2020 Yukon XL Denali with what seems to be an intermittent battery drain. About once every couple of months I go to start the truck in the morning and the battery is dead. Battery was replaced under warranty already because the dealer thought it may have been a bad battery--not the case, still happens. about 30k miles on it. I have a suspicion that something is turning on by itself at night and draining the battery. I have seen a few instances that looked like the Infotainment screen was on, but blank (not displaying anything, but the back light on). Most recently I was woken up at 5am with the Denali's alarm going off, no one was around (I checked my driveway cam and there was no activity) so the alarm must have gone off by itself. Soon after disabling the alarm the battery was dead, would not start the truck. I check the battery with a mulitimeter and it was like < 5V. Has anyone else had a similar issue?
 

Forum statistics

Threads
118,233
Posts
1,624,536
Members
79,245
Latest member
Dawg
Top