WenmarOpen by Wenmar Pro

Service bulletins for the 2023 Cadillac Lyriq

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.

735 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
22-NA-1142024-02-29. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides information on Forklift and Vehicle Hoist Requirements to Support Electric Vehicle (EV) High Voltage Battery Handling.
PIE07782024-02-28. Service bulletin. STEERING; ELECTRICAL SYSTEM. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to steering loss of assist while driving.
23-NA-2172024-02-27. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides information on Lithium-Ion Battery - TAC Approval and Exchange Program for Cadillac Lyriq, Chevrolet Blazer EV, and Chevrolet Corvette E-Ray.
20-NA-0182024-02-23. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides information for dealers/technicians on MDI 2 Required When Programming Vehicles with Vehicle Intelligence Platform (VIP).
18-NA-1802024-02-23. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
18-NA-1802024-02-17. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
23-NA-1892024-02-14. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus traffic (voltage patterns) to aid Technical Assistance (TAC) and Field Service Engineers (FSEs) in diagnosing electrical issues present on network communication circuits.
23-NA-0552024-02-14. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides information on the EL-52800 Diagnostic & Charge Battery Station (DCBS) – FAQs.
22-NA-1142024-02-14. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides information on Forklift and Vehicle Hoist Requirements to Support Electric Vehicle (EV) High Voltage Battery Handling.
PIE0753C2024-02-14. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering study and analysis.
PIE0769B2024-02-14. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard the door windows will not roll all the way up.
PIT61132024-02-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a normal programming Characteristic for the K73 Telematics Control Module.
PIT6047C2024-02-12. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; UNKNOWN OR OTHER. This Preliminary information communicates to dealership technicians to create a USB file that will have the radio ignore the BCM message for the 12v battery state of charge being to low that will cause the radio to not USB update.
PIT6065C2024-02-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates to technicians to perform the programming to the vehicles module to correct customer concerns.
23-NA-1512024-02-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This informational bulletin provides a procedure to High Voltage Battery Core Return Shipment Criteria.
PI0592I2024-02-02. Service bulletin. ELECTRICAL SYSTEM. This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).
23-NA-2212024-01-31. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides a procedure for Sun Load, Ambient Light, and Charge Indicator Sensor Replacement to correct a customer concern of A/C Inoperative or A/C blows warm air.
23-NA-2172024-01-31. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This informational bulletin provides information on Lithium-Ion Battery - TAC Approval and Exchange Program for Cadillac Lyriq and Chevrolet Blazer EV.
PIT5962A2024-01-29. Service bulletin. ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS; UNKNOWN OR OTHER. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
PIP59522024-01-29. Service bulletin. ELECTRICAL SYSTEM. This preliminary information communicates to all field technicians the imperative protocol that if any of the listed codes are detected, currently or historically, the specified procedure must be strictly followed prior to the replacement of any A28B secondary contactor assembly. This advisory highlights that the presence of these codes could be indicative of a potential calibration anomaly. By following the outlined procedure, it is likely that the concern can be resolved without the necessity for additional parts.
PIT6092B2024-01-29. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. This Preliminary information communicates to general motor technicians that this concern can happen once the radio is factory reset. GM is aware of this and have provided a work around but is still developing the repair.
PIT60982024-01-29. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:PORT. This Preliminary information communicates to the technicians that GM is aware of this issue and are root causing the concern. Once a solution is available, the PI will be updated to reflect the new direction.
PIC6525A2024-01-29. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary information communicates to dealership technicians that this could be a radio software concern that caused this issue. Follow normal SI diagnostics if Google services are not operational. This PI will be updated with further information once a correction is created.
18-NA-1802024-01-19. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Warranty Administration Bulletin Provides High Voltage Battery Exchange Process Information.
23-NA-2172024-01-13. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This informational bulletin provides information on Lithium-Ion Battery - TAC Approval and Exchange Program for Cadillac Lyriq and Chevrolet Blazer EV.

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