- Local time
- 2:32 PM
- User ID
- 4
- Joined
- Dec 3, 2015
- Messages
- 52,548
- Reaction score
- 350,012
- Location
- Banner Springs Tennessee

2021 Yukon. 3,300 miles.
Customer complaint of multiple warning lights, messages on start up.
95 dtc's stored in 22 different modules, mostly low voltage and loss of communication.
Battery voltage at 5v. Charged, tested good.
Let sit, same thing.
Charge, tested, failed. Replace battery.
Check parasitic draw, 15mA.
Let it sit outside, started 3 times throughout the day, then 2 hours later, same *s-word. Battery voltage at 3.8v.
View attachment 282453
I hate cars.
I feel the same way about saws.
But not a thief as far as anyone knows anyway.
At least not yet....
I have little confidence in youtubers