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Service bulletins for the 2019 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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
110089002D2020-03-09. Service bulletin. EQUIPMENT. This informational bulletin provides information on GM Accessories ? Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
050307009I2020-03-09. Service bulletin. WHEELS; EQUIPMENT. This informational bulletin provides retail, wholesale and fleet personnel with General Motors recommendations for customer concerns related to wheel alignment.
20NA0162020-03-09. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information on customer vehicles concern results in a manufacturer repurchase from the customer, GM depends on the dealership to host and administer the repurchase closing and intake of the returning vehicle.
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.
18NA3062020-03-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only).
18NA2792020-03-02. Service bulletin. STRUCTURE:BODY:DOOR; LATCHES/LOCKS/LINKAGES:DOORS:LATCH. This informational bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
16NA3832020-03-02. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. This informational bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
15NA0102020-03-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This informational bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.
N1922816702020-02-18. Service bulletin. EQUIPMENT. Customer Satisfaction Program - Certain vehicles may have a condition in which the customer experiences a service engine soonlight and a rough engine idle due to chafing of an engine wiring harness. Dealers are to install a protective conduit on the engine harness.
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.
PIC6048M2020-02-10. Service bulletin. LANE DEPARTURE; STEERING. This Preliminary Information communicates to the technician that some customers may comment on the operation of their haptic seat during a Lane Keep Assist event. Lane Keep Assist works differently than Lane Departure Warning. The Lane Keep Assist icon is solid amber, Forward Camera Module is actively commanding a torque to Electronic Power Steering. This means that the driver should also feel some feedback from the steering wheel. No Chimes or haptic in the seat. Lane Keep Assist icon is flashing amber; Forward Camera Module is actively commanding torque to Electronic Power Steering. This will also be accompanied with Lane Departure Warning chimes and haptic in the seat feedback based on the setting chosen in the vehicle settings. This will take place when the vehicle has crossed lane marking by (40 cm) or (15.75 in).
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
N1922824302020-02-10. Service bulletin. ENGINE AND ENGINE COOLING. N192282430 - Service Update. Certain vehicles may have a condition where after multiple start/stop events in a row, an electronically controlled transmission shift to neutral may occur upon a change of mind auto stop/start event. Multiple start/stop events in a row may cause the intake manifold temperature to creep over 40C. Hot intake manifold temperatures and an extremely retarded spark can aggravate a false positive stall condition, resulting in the default shift to neutral remedial action. Dealers will reprogram the ECM.
PI0592F2020-01-21. Service bulletin. EQUIPMENT. This preliminary information bulletin provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).
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
PIC6290C2020-01-21. Service bulletin. STEERING; SERVICE BRAKES, HYDRAULIC. This Preliminary information communicates to the dealer that a thump or bump feel or noise may exist on a hard apply of the brakes or when applying the brakes, letting or, then re-applying the brake when the steering wheel is in the straight ahead position. Engineering has investigated and determined to be a normal operating characteristic.
PIC6048L2020-01-21. Service bulletin. LANE DEPARTURE. This Preliminary Information communicates to the technician that some customers may comment on the operation of their haptic seat during a Lane Keep Assist event. Lane Keep Assist works differently than Lane Departure Warning. The Lane Keep Assist icon is solid amber, Forward Camera Module is actively commanding a torque to Electronic Power Steering. This means that the driver should also feel some feedback from the steering wheel. No Chimes or haptic in the seat. Lane Keep Assist icon is flashing amber; Forward Camera Module is actively commanding torque to Electronic Power Steering. This will also be accompanied with Lane Departure Warning chimes and haptic in the seat feedback based on the setting chosen in the vehicle settings. This will take place when the vehicle has crossed lane marking by (40 cm) or (15.75 in).
PIC63792020-01-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. This Preliminary information communicates the possibility of a short to ground on object buss at the drivers side sun visor mounting screw.
PIC63772020-01-21. Service bulletin. SERVICE BRAKES. This Preliminary information communicates that a customer may experience a moan or vibration at low speed maneuvers or brake apply caused by V-Series vehicles being equipped with high performance track capable brake lining that generates high brake torque during a brake event. Revised Upper Control Arms will be released in 2020 to address. The noise will not effect the performance or reliability of the vehicle.
PIP5673A2020-01-21. Service bulletin. STRUCTURE. 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.
N192264450 022019-12-30. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:PADS; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC. N192264450-02 - Customer Satisfaction Program - Certain 2019 model year Cadillac CT6 vehicles equipped with the Brake Lining Wear System Life Span Prognostic Indicator, (RPO JBP), may have a condition in which the software calculation that is reported to the driver?s information center may be 16X faster than what the brake pads are actually experiencing. Dealers will reprogram the brake system control module (BSCM) and if necessary, replace the brake pads.
N192264450 012019-12-30. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:PADS; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC. N192264450-01 - Customer Satisfaction Program - Certain 2019 model year Cadillac CT6 vehicles equipped with the Brake Lining Wear System Life Span Prognostic Indicator, (RPO JBP), may have a condition in which the software calculation that is reported to the driver?s information center may be 16X faster than what the brake pads are actually experiencing. Dealers will reprogram the brake system control module (BSCM) and if necessary, replace the brake pads.
N1922644502019-12-30. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:PADS. Certain 2019 model year Cadillac CT6 vehicles equipped with the Brake Lining Wear System Life Span Prognostic Indicator, (RPO JBP), may have a condition in which the software calculation that is reported to the driver?s information center may be 16X faster than what the brake pads are actually experiencing. Dealers will reprogram the brake system control module (BSCM) and if necessary, replace the brake pads.
PIE05452019-12-16. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This engineering information bulletin is requesting information on paint quality issue that drives a warrantable item type of repair on any 2019 or 2020 Cadillac Model and to submit a Field Product Report (FPR) using the FPR App.
100089009D2019-12-16. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin provides information on key code security rules and information on GM keycode look-up applications.

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