Cadillac CT4 2019–2023 — service campaign
Bulletin N242450631 · NHTSA communication 11007868 · issued Sep 12, 2024
Service campaign
communication type
Engine
component
2019–2023
model years
12
vehicle entries
Official summary
Service Update. Certain vehicles equipped with a 2.7L engine (RPO L3B), may have an Engine Control Module (ECM) that does not sufficiently control fuel injector flow rate under certain driving conditions. Dealers are to reprogram the ECM.
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.