2014 mystery electrical

[Snowhite]

Bizarre to say the least. Driving....locks start going up and down, ac turns off, motor dies.
No power to anything. Then just 15 minutes after being broke down it all comes on and runs fine fir maybe 30 days? Today same thing.
Battery test ok, alternator test ok. All cables clean and tight. I looked around in here haven't seen my problem listed.

What gives?? I can't have my wife driving with this in San Antonio traffic.

 

[Geotrash]

I’ve heard of folks having similar symptoms and in a few cases it ended up being the bottom of the fuse block getting corroded. In others it was the BCM or ECM. In still others it was a battery cable corroded on the inside, between the strands of copper.

 

[CaptainAmerica1]

I accidentally washed my key fob and caused this exact issue. Opened the fob left in rice overnight, reassembled the following morning, problem went away…

 

[wjburken]

I’ve heard of folks having similar symptoms and in a few cases it ended up being the bottom of the fuse block getting corroded. In others it was the BCM or ECM. In still others it was a battery cable corroded on the inside, between the strands of copper.

I would definitely look at the fuse block under the hood. I had the the one kn my 2007 Silverado that was corroded to the point I had to pull the fuses for the headlights to get them to turn off as well as the fuse for the horn so it wouldn’t constantly sound when I turned the truck off.

I would also check all the grounding straps if you haven’t already done so.