Cadillac Escalade Esv 2022 — technical service bulletin
Bulletin PIT5948 · NHTSA communication 10224300 · issued Sep 27, 2022
Technical service bulletin
communication type
Service Brakes, Air
component
2022
model years
6
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 is aware of the issue and working on a fix.
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.