Question

2012 Chevrolet Silverado 1500 6.2L with DTC code C1112 service trailer brake, what does the code mean?

Answer 1

The C1112 code indicates a problem with the Trailer Brake Signal. You could start by checking the trailer brake signals and trailer connection. Here is more information about the code:

C1112 Chevrolet Code - Trailer Brake Signal to Trailer Brake Power Control Module Circuit Malfunction
Read more: https://www.autocodes.com/c1112_chevrolet.html