Cadillac CT6 2018–2023 — technical service bulletin
Bulletin PIT6127A · NHTSA communication 11006303 · issued Aug 13, 2024
Technical service bulletin
communication type
Electrical System
component
2018–2023
model years
7
vehicle entries
Official summary
This Preliminary information communicates a vehicle may come to the dealer with Super Cruise inoperative. On inspection the tech will find code B126B. Tech is given direction on how to update the Map module to restore function. Dealer is also given directions to give to customer to ensure they continue to receive updates.
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.