Cadillac CT4 2020–2022 — technical service bulletin
Bulletin 23-NA-109 · NHTSA communication 10239697 · issued Jul 18, 2023
Technical service bulletin
communication type
Electrical System
component
2020–2022
model years
6
vehicle entries
Official summary
This service bulletin provides a procedure to correct a customer concern of Service Restraint System and/or Airbag Readiness Message Displayed - DTCs B15DF / B15E3.
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.