Hopefully you disconnected the battery right away.

Whatever failed may or may not have been related to the parasitic draw, as when you connect the battery, a bunch of computers get powered up and they go through a variety of checks, and apparently around that time, something decided to let the magic smoke out.

 

Hopefully you disconnected the battery right away.

Whatever failed may or may not have been related to the parasitic draw, as when you connect the battery, a bunch of computers get powered up and they go through a variety of checks, and apparently around that time, something decided to let the magic smoke out.

Yes I disconnected quickly but it was probably 20-30 seconds. I actually smelled

Probably 20-30 seconds and could smell the burning before I saw smoke.

 

20-30 seconds, I would guess there are some melted wires in your dash. You are in for some fun now.

 

Problem solved. What Chevy calls the center console fuse box, under steering column to left, is a connector for trailer brakes. That 5 wire harness is what was smoking and melting. Must be an issue in brake controller. Replaced both and haven’t had a problem.