Cadillac XT4 2019–2022 — technical service bulletin
Bulletin 21-NA-226 · NHTSA communication 10209260 · issued Mar 9, 2022
Technical service bulletin
communication type
Equipment
component
2019–2022
model years
4
vehicle entries
Official summary
This technical bulletin provides repair information to correct a customer concern of Black Screen on Radio Display Shifting into Reverse.
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.