Saturday, August 8, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

Cadillac CT4 2020–2023technical service bulletin

Bulletin 21-NA-091 · NHTSA communication 10231520 · issued Jan 30, 2023

Technical service bulletin
communication type
Equipment
component
2020–2023
model years
28
vehicle entries

Official summary

This service bulletin provides information for customers/dealers/technicians on Normal Camera Display Operation - Flashing Diamond - Spot - or UFO like image on Camera Display.

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.