Affected Component: TRAILER HITCHES

Date Published
FEB 14, 2023
NHTSA TSB #
10232813
TSB Document
Summary
This Preliminary information communicates that when they connect a trailer to the truck that there is a Service Trailer Brake message displayed in the DIC.  When checking for DTC's a C159C sym49 maybe set for the Trailer Brake Control Switch. GM Engineering released an updated trailer brake switch, See Customer Satisfaction Program N222384930.