Cadillac XT4 2024–2025 — technical service bulletin
Bulletin PIC6643 · NHTSA communication 11028861 · issued Feb 13, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2024–2025
model years
2
vehicle entries
Official summary
This Preliminary information communicates to the technician the repair direction needed to diagnose intermittent front turn signal flashing fast condition.
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.