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Service bulletins for the 2022 Cadillac CT4

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.

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

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By component

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
22-NA-1132022-06-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of Head Up Display (HUD) Blank, Non-Responsive to Brightness, Aim, or Page Controls, DTC U0158 Set.
PIE0661C2022-06-04. Service bulletin. FORWARD COLLISION AVOIDANCE; ELECTRICAL SYSTEM. This engineering information (EI) closure ends the need for further information from the field in regards to a Forward Collision Icon Message Illuminated on Driver Information Center (DIC) and/or No DTCs Set.
22-NA-1072022-06-04. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION. This service bulletin provides repair information to correct a customer concern of a Service AWD Message in DIC at Ignition On with DTC C056D Set.
22NA0202022-05-31. Service bulletin. SEATS; STEERING; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS. This service bulletin provides warranty labor operation restriction information for dealers/technicians on Park Assist, Heated/Vented Seats, and/or Heated Steering Wheel Options and Features are Inoperative.
22NA0122022-05-31. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS. This service bulletin provides information for dealers/technicians on Stone Chip/Membrane Damage, Broken Connector and/or Sensor Retaining Tabs, and/or Paint Damage of Park Assist Sensors.
PIP4670J2022-04-18. 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.
PIP58432022-04-18. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. This Preliminary information communicates to the dealers information related to a Malfunction Indicator Lamp (MIL) Illuminated During Cold Ambient Temperatures with DTCs P30C3 and/or P30BF P30C7 P30CB Setting.
22-NA-0442022-04-08. Service bulletin. ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. This service bulletin provides repair information to correct a customer concern of Check Engine MIL Illuminated in DIC Set by Body Control Module with DTC P0607.
22-NA-0502022-04-06. Service bulletin. ELECTRICAL SYSTEM; SEATS. This service bulletin provides information for dealers/technicians on Changes to Front Heated and/or Ventilated Seats, and Second Row Outboard Heated Seats for Certain 2022 Passenger Car, Crossover, SUV, and Truck Models Equipped with RPO 00V, 00R and/or RGJ produced without front Heated/Ventilated Seat Module and/or rear Heated Seat Module.
PIE0661B2022-04-02. Service bulletin. ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a Forward Collision Icon Message Illuminated on Driver Information Center (DIC) and/or No DTCs Set.
22-NA-0512022-03-30. Service bulletin. PARKING BRAKE; EQUIPMENT; ELECTRICAL SYSTEM. This informational bulletin provides information for dealers/technicians on Changes to Park Assist and Reverse Automatic Braking for Certain 2022 Passenger Car, Crossover, SUV, and Truck Models Equipped with RPO 00Y and/or 00Z.
22-NA-0202022-03-30. Service bulletin. ELECTRICAL SYSTEM; STEERING; SEATS. This warranty administration service bulletin provides warranty labor operation restriction information for dealers/technicians on Park Assist, Heated/Vented Seats, and/or Heated Steering Wheel Options and Features are Inoperative for vehicles that may have had options built without modules due to semiconductor shortage.
22-NA-0492022-03-18. Service bulletin. STEERING; ELECTRICAL SYSTEM. This informational bulletin provides information for dealers/technicians on Changes to Heated Steering Wheel for Certain 2022 Passenger Car, Crossover, SUV, and Truck Models Equipped with RPO 00G.
PIC64502022-03-14. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a process to correct the concern of Unable to contact OnStar after the 3G EOL on 2015-2022 model year vehicles in the United States.
PIC6048N2022-02-14. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; STEERING; AIR BAGS; LANE DEPARTURE; BACK OVER PREVENTION. 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).
21NA2562022-02-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); EXTERIOR LIGHTING. This service bulletin provides repair information for dealers/technicians to correct a customer concern of a Malfunction Indicator Lamp Illuminated with DTC P26BB Set.
PIE06722022-01-03. Service bulletin. EQUIPMENT:MECHANICAL; ELECTRICAL SYSTEM. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Check Engine Lamp illuminated on the Driver Information Center (DIC) to determine root cause.
21NA2792021-12-27. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides a procedure to replace the starter if found the cause of the rattle noise.
20NA1322021-12-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
PIT58512021-10-25. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER. This Preliminary information communicates an issues with the odometer being incorrect after a programming event and how the dealership can resolve the issue.
PIT5698B2021-09-13. Service bulletin. ELECTRICAL SYSTEM:ADAS:BLINDSPOT:SENSORS. This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.

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