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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: Electrical system are shown. Show all

Bulletins, newest first
20NA0802020-04-27. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; SEATS; EQUIPMENT ADAPTIVE/MOBILITY. This technical bulletin provides repair information to correct a customer concern of a rear outboard heated seat inoperative, possible dead or drained battery.
PIC64102020-04-13. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. This preliminary information describes a condition where movies will no longer play on the radio display after a software update. This PI gives them the option of returning to the previuos version as long as they are willing to accept that they may have issues with the concerns that were fixed with the updated software until a repair is released
PIC6339B2020-03-09. Service bulletin. ELECTRICAL SYSTEM; STEERING. This Preliminary information communicates to the dealer technician the need to disconnect the Steering Column Friction Control Module to correctly diagnose B290A SYM49.
030846004W2020-03-09. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information regarding Part Restriction and Ordering Process Information for OnStar® Vehicle Communication Interface Modules (VCIM) (GMNA Only).
19NA2792020-03-02. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. This Technical bulletin provides a procedure for dealers/technicians on Radio Software Version V807 Over-the-Air Update.
PIP5666C2020-02-10. Service bulletin. ELECTRICAL SYSTEM. The Preliminary Information communication advises the technician that the Product Quality Center has a part exchange for 4.2L LTA engine. The dealer technician is advised to call the GM Product Quality Center for further assistance
PIC6123F2020-01-21. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician for the adaptive cruise control or lane keep assist unavailable message in the driver?s information center after the vehicle has been parked in direct sunlight and high ambient temperatures. The cameras electronic control unit?s internal operating temperature range is -40 degrees Celsius to 85 degrees Celsius. If the temperature of the electronic control unit of the camera module exceeds 85 degrees Celsius the image processor will no longer function resulting in adaptive cruise control and lane keep assist to be unavailable until the temperature falls to below the maximum operating temperature range
PIC6359A2019-12-09. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a normal cycling draw caused by the keyless entry control module for approach lighting.
N1922738702019-11-12. Service bulletin. ELECTRICAL SYSTEM; BACK OVER PREVENTION. N192273870 - Service Update. Certain vehicles may have the memory in the video processing module (VPM) become corrupt under certain conditions, causing the rear-view camera display to show a blue screen. Dealers are to reprogram the VPM.
PIP4670H2019-10-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about a no start or another concern after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.
PIP56732019-10-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates advises the technician that the ECM part number will be placed on a parts restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
PI0592E2019-09-23. Service bulletin. ELECTRICAL SYSTEM. This preliminary information bulletin provides information om Service Programming System (SPS) Error Codes E4398, E4399, E4403, M4404, M4413, E4414, E4423, E4491 or E6961).
100845001G2019-07-29. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
060847001O2019-07-29. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. This bulletin explains the labor operation numbers used for submitting warranty claims for module reprogramming and not when replacing a module.
PIC6352A2019-06-10. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates to inspect the LVDS cable connections if unable to learn the Night Vision camera.
030603004Y2019-05-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
090089002Q2019-04-22. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer.

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