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Service bulletins for the 2020 Cadillac CT6

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

753 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Throttle and cruise control are shown. Show all

Bulletins, newest first
10-08-110-001L2025-02-11. Service bulletin. STRUCTURE:BODY; VEHICLE SPEED CONTROL. This service bulletin provides information on proper use of floor mats.
PIT61272024-03-18. Service bulletin. ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL:CRUISE CONTROL. 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.
PIP5848A2023-04-17. Service bulletin. VEHICLE SPEED CONTROL:ACCELERATOR PEDAL. This Preliminary information communicates additional diagnostics for shudder related complaints.
N2023239302021-02-16. Service bulletin. ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL. Service Update - vehicles may have been retrofitted with an incorrect left hand under hood electrical center cover and others may have received a replacement left hand under hood electrical center with an incorrect fuse. Dealers will replace the electrical center cover on two vehicles and fuse on two vehicles.
19NA2752020-10-26. Service bulletin. VEHICLE SPEED CONTROL. This technical bulletin provides service information to correct a customer concern of a moan type noise being heard during low speeds maneuvers.
PIC6312C2020-02-10. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. This Preliminary information communicates diagnostic tips to assist with diagnosis of the Super Cruise system.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.