Roughy_

Update: Had a Chevy dealer run a diagnosis. When they checked the negative battery cable, it came back to 400v. The tech said It should be 2v.

Update:

I'm suspecting that its one of the 7 modules that connect to the BCM that's shorting out, are just bad. I'm also suspecting that its the BCM itself as well. The Battery was checked by o Riley's and is good, so is the cables. I've also checked ground straps, which have all been tight.

I had O Riley's check the battery and alternator. They both checked fine. I'm suspecting its one of the 7 modules that connect to the BCM. I just don't wanna go throwing money at replacing all 7 modules including the BCM itself. I'm gonna try calling a Chevy dealership and see if they can scan for any issues with the modules themselves.

Have a 2013 Chevy 1500. Has 103k miles on it. Had a weird incident where my radio would randomly shutoff while driving, then shortly thereafter have multiple light flash on the dash, which was followed by the truck downshifting by itself without decelerating (Limp mode I would assume). This would happen for about 10 seconds. Then everything would go back to normal. Then it would do it again maybe more or two more times. I'm posting this here because I'm not sure if it the BCM, ECM, etc. All help and suggestion are welcome. Thanks