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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
PIP56662019-09-16. Service bulletin. ENGINE AND ENGINE COOLING. 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
PIC6123E2019-09-16. 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
PIP5575E2019-09-16. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. This Preliminary information communicates to the dealer technician that the transmission control module P/N 24296206 restriction has ended.
PIT5663A2019-09-16. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT:ELECTRICAL. This PI was written to inform dealers of a condition where a "Climate off" message will be displayed on the screen even thought the HVAC system is fully operational. Dealers are also informed that engineering is working on a solution
PIC6123D2019-09-16. Service bulletin. ELECTRICAL SYSTEM; LANE DEPARTURE; ENGINE; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. 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
PIP5575D2019-09-16. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This Preliminary information communicates to the dealer technician that the transmission control module P/N 24296206 is on restriction through the PQC.
19NA1422019-08-26. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN. This technical bulletin provides information for new transmission oil to use, a procedure for exchanging the old fluid and adding the new fluid to a service transmission.
19NA0102019-08-26. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. This informational bulletin provides information for dealers/technicians on Information on Head-Up Display (HUD) on Vehicles Model Year 2017 and Newer Has Rotational Feature that Allows for Adjusting of the Angle of the HUD Image.
N192210460 012019-08-26. Service bulletin. ENGINE AND ENGINE COOLING; SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM. N192210460-01 - Service Update - Certain 2019 Cadillac CT6 equipped with engine RPO?s LSY or LTA, Chevrolet Silverado 1500 (New Model), and GMC Sierra 1500 (New Model) vehicles have a condition where the brake system control module (BSCM) may cause a service brake assist message to appear on the driver?s information center (DIC), and a service engine soon light to illuminate on the dashboard. This may cause the brake pedal feel to be different. The pedal travel will increase for normal/light braking applies. This is caused by a software issue where the motor position sensors do not correlate. Dealers will reflash the BSCM with updated software.
N192211740 012019-08-26. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Customer Satisfaction Program (revised service procedure). General Motors is expanding the mileage of Super Cruise enabled roads to include over 70,000 additional miles (112,000 additional km) by the end of 2019, bringing the total number of Super Cruise enabled roads to over 200,000 miles (320,000 km). In addition to the currently mapped roads, this mileage expansion allows for the Super Cruise driver assistance feature to be engaged on divided, high-speed main roads that contain some limited intersections and traffic control devices. As always, it remains important for drivers to stay engaged and vigilant at all times while Super Cruise is engaged. Reprogram Active Safety Control Module and the Digital Map Control Module.
1922174902019-08-26. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT. Customer Satisfaction Program. General Motors is expanding the mileage of Super Cruise enabled roads to include over 70,000 additional miles (112,000 additional km) by the end of 2019, bringing the total number of Super Cruise enabled roads to over 200,000 miles (320,000 km). In addition to the currently mapped roads, this mileage expansion allows for the Super Cruise driver assistance feature to be engaged on divided, high-speed main roads that contain some limited intersections and traffic control devices. As always, it remains important for drivers to stay engaged and vigilant at all times while Super Cruise is engaged. Reprogram Active Safety Control Module and the Digital Map Control Module.
990089019R2019-08-19. Service bulletin. EQUIPMENT. This informational bulletin provides process information for the (GWM) and (WPC) parts return program.
19NA1712019-08-19. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Displaying Terms and Conditions Agreements Page Every Ignition Cycle (Canada Only).
18NA3552019-08-19. Service bulletin. POWER TRAIN. This technical bulletin provides information for new transmission oil to use and a procedure for exchanging the old fluid and adding the new fluid to correct a shake/shudder during light throttle acceleration condition.
N192211740 022019-08-19. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL; EQUIPMENT. Customer Satisfaction Program (revised service procedure and warranty information). General Motors is expanding the mileage of Super Cruise enabled roads to include over 70,000 additional miles (112,000 additional km) by the end of 2019, bringing the total number of Super Cruise enabled roads to over 200,000 miles (320,000 km). In addition to the currently mapped roads, this mileage expansion allows for the Super Cruise driver assistance feature to be engaged on divided, high-speed main roads that contain some limited intersections and traffic control devices. As always, it remains important for drivers to stay engaged and vigilant at all times while Super Cruise is engaged. Reprogram Active Safety Control Module and the Digital Map Control Module.
PIC6355A2019-08-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about how to diagnosis a battery draw that may be caused by a module back feeding voltage in the ignition relay circuits making the vehicle think it is still awake.
PIT5535D2019-08-12. Service bulletin. LANE DEPARTURE. This Preliminary Information communication provides information to the technician about vehicles that may have Service Front Camera, Service Lane Departure Warning, and Service Lane Keep Assist Message. Technician may find Diagnostic Trouble Code B1008 Sym 4B set. Technician will need to check the windshield to ensure it is not aftermarket. Technician will also check for anything that may impair the front view camera and ensure the camera is properly mounted.
PIC6137F2019-08-12. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that the engine stops running after extended idle with shifter in park. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. If the customer exits the vehicle with the fob in their possession while the engine is running and the shifter is left in park, the engine will shut off after 1 - 2.5 hours depending on model year. If the customer is sitting in the vehicle with the engine running and the fob is in the vehicle, the Passive Entry Passive Start system will reach out and look for the fob after 1 - 2.5 hours depending on model year. If the fob is located, the timer will reset an additional 1 - 2.5 hours depending on model year.
1308116001E2019-07-29. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
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.
090604026Q2019-07-29. Service bulletin. ENGINE; EQUIPMENT. This informational bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
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.
050604022Q2019-07-29. Service bulletin. FUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
000601012J2019-07-29. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin advises about the possible issues that may occur when using a scotch brite pad or highly abrasive disk on gasket sealing surfaces or reused parts.
19NA1042019-07-29. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. This informational bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area.

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