Cadillac XTS 2013–2019 — technical service bulletin
Bulletin PIC6435 · NHTSA communication 10190440 · issued Mar 31, 2021
Technical service bulletin
communication type
Exterior Lighting
component
2013–2019
model years
7
vehicle entries
Official summary
This Preliminary information communicates that U1523 may set after right headlamp replacement due to a part issue. Engineering is looking into the concern.
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.