Failing BCM?
Got this truck in May, but this problem has only started since the cold weather started.
After letting it sit a few days, I go to use the truck and it's got no juice. Not even the odometer lights up when I open the door. I hold the radio power button in until it turns on and the truck comes to life. Battery has a full charge (it's only like a month old). I've only had it happen twice so it's not like I can recreate the issue for the shop without some luck. No codes or anything.
Any ideas? Initial research makes me think the BCM is failing, but wtf.
Posted Dec 3, 2023, 12:39 PM UTC
12
The thing about modules on vehicles is they don't just begin to fail or begin to go out. It's not like a light switch in your house that you have to flip on and off a few times before something will work. Modules will just go bad, with no warning signs.
Even though the battery is a month old, has it been load tested? Do you have anything plugged in that could cause it to be pulled down?
The only thing I have plugged in is my range chip, but pulling that didn't do anything. I don't think its anything parasitic or a loose connection because the battery has a full charge (13v+ with a multimeter, shows full after a few mins with a charger), and when I do the radio trick it turns over/starts strong and shows good voltage on the instrument cluster. Terminal cables are tight and clean, and no anti-corrsion gel or anything is creating a barrier between the terminal/cable
Thx for the help and downvotes