B0100 code, 2011, Silverado, 1500 4 x 4, 5.3L, Flex Fuel.
DIC shows message "Service Trailer Brake System".
A scan for codes shows seven events.
1. Short in D Squib Circuit. What and Where is D Squib? One of the Electronic Modules in the brake system some where?
2. FSC DTC
What is FSC? Maybe...Front Sensor? Where?
5-7 repeats above.
These codes were manufacture specific to Chevy. No other codes.
No trailer is hooked up. Seems to show most frequently while backing out of the garage in cold weather. I can clear the code but it immediately registers again.
I noticed today that my battery seems to have a slow drain also. This was after 3 days of not driving it. Related...?