This 2012 Chevrolet Silverado came in with the complaint that the battery would go dead if the owner let the truck sit for a week.
No one was able to replicate the concern including myself. I went a couple of steps further and eventually got the truck to act up.
I was concerned that the battery was being overlooked so I installed a known good battery in the truck and parked it. I also fully charged the customer’s battery and left it in my shop where I checked the voltage at least twice a day. I did find a problem with the customer’s battery. The voltage started at 12.95 and after several day dropped to 12.5 volts. A good battery should have held above 12.6 volts.
The day came for deep testing and I went ahead and load tested the customer’s battery and it tested as okay. However, I went to the truck to see how it was doing and found that the voltage had dropped to 3.5 volts. I checked for a drain at the truck and found none present. I went ahead and jump started the engine with a battery jump box and this is about where the following video begins. Hope you like the format I am trying out. Let, me know in the comments either here or on YouTube, Thanks Sparky