Cadillac Escalade Esv 2022–2023 — technical service bulletin
Bulletin PIT5948B · NHTSA communication 10232813 · issued Feb 14, 2023
Technical service bulletin
communication type
Trailer Hitches
component
2022–2023
model years
9
vehicle entries
Official 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.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.