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Service bulletins for the 2023 Cadillac XT4

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
23-NA-0642025-01-03. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
21-NA-2402025-01-03. Service bulletin. ENGINE. This service bulletin provides diagnostic repair information to correct an oil leak on top of the engine that may be coming from cam carrier- T-joint area.
22-NA-2382024-12-19. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative.
08-07-30-035I2024-12-19. Service bulletin. POWER TRAIN. This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
21-NA-1812024-12-18. Service bulletin. POWER TRAIN. This service bulletin provides 9th gear operation information to respond to customers that may comment on transmission shift operation.
19-NA-2192024-12-17. Service bulletin. ENGINE. This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
PIT5962B2024-12-12. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
21-NA-0432024-12-10. Service bulletin. STRUCTURE:BODY; WHEELS; ENGINE; SERVICE BRAKES; UNKNOWN OR OTHER. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
PIC65872024-12-09. Service bulletin. UNKNOWN OR OTHER; LANE DEPARTURE: ASSIST; LANE DEPARTURE: WARNING. This Preliminary information communicates Thus the active safety systems maybe inoperable and to perform a module reset to correct.
PIC6552D2024-12-09. Service bulletin. LANE DEPARTURE: ASSIST; UNKNOWN OR OTHER; LANE DEPARTURE: WARNING. This Preliminary information communicates how to recover the Image Processing Module.
PIT5551P2024-12-05. Service bulletin. FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
24-NA-2392024-12-05. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope.
23-NA-0212024-12-04. Service bulletin. ENGINE; POWER TRAIN. This service bulletin advises the tech that the rotational Clicking Noise Heard After Engine Shut Down may be normal characteristics of the vehicle.
04-06-01-029K2024-12-04. Service bulletin. POWER TRAIN; STEERING; ENGINE. This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
21-NA-1692024-12-03. Service bulletin. POWER TRAIN. This service bulletin provides diagnostic information/procedures to aid the service technician in diagnosing 9T45/50/60 automatic transmissions with low mileage and DTCs current or history related to the control solenoids and valves.
24-NA-2292024-12-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to measure the load on the system that may be causing a drain.
24-NA-1082024-11-21. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This service bulletin provides a procedure to correct radio software concerns.
24-NA-0402024-11-16. Service bulletin. UNKNOWN OR OTHER. This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center (WPC) must be shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC.
10-00-89-009F2024-11-14. Service bulletin. UNKNOWN OR OTHER. This service bulletin provides information on key code security rules and information on GM keycode look-up applications (U.S).
23-NA-1542024-11-13. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information on Warranty Administration – Required Operating Procedures - 8 Points (U.S. Only).
22-NA-2442024-11-13. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY. This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
22-NA-0532024-11-13. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This service bulletin provides information for dealers/technicians on New Labor Operations for Limited Production Option (LPO) Calibrated Accessories.
07-00-89-037T2024-11-13. Service bulletin. UNKNOWN OR OTHER. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
01-06-01-011Q2024-11-13. Service bulletin. ENGINE. This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
99-00-89-019Z2024-11-13. Service bulletin. UNKNOWN OR OTHER. This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.

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