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Service bulletins for the 2019 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.

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

By type

By component

By trouble code

By topic

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
18NA2792019-11-25. Service bulletin. EQUIPMENT:ELECTRICAL. This informational bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
PIE0526A2019-10-28. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. This engineering informational bulletin is requesting information from the field to determine the root cause of the overhead sunglasses compartment not being able to secure back into the resting position. Engineering to develop/Validate a Field Fix.
17NA0732019-10-28. Service bulletin. EQUIPMENT. This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
19NA2072019-10-28. Service bulletin. EQUIPMENT. This informational bulletin provides information to educate the customer on using either the radio and/or the physical controls to adjust the HVAC settings.
19NA1892019-10-28. Service bulletin. EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of Radio Displays Climate Off Message or HVAC Popup Displays Different Settings.
130089008B2019-09-23. Service bulletin. EQUIPMENT. This bulleting provides Wiring, Terminal and Connector Repair Information including how to determine the Service Part Number in eSI and how to locate the part(s) in the EPC.
19NA1892019-09-23. Service bulletin. EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of Radio Displays Climate Off Message or HVAC Popup Displays Different Settings.
19NA0872019-09-23. Service bulletin. EQUIPMENT. This Technical bulletin provides information for dealers/technicians on Radio Software Version V805 Over-the-Air Update Release.
18NA1462019-09-23. Service bulletin. EQUIPMENT. This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
17NA2762019-09-23. Service bulletin. EQUIPMENT:ELECTRICAL. This informational bulletin provides information on Loss of Phone Pairing or Favorites, Last Setting of Volume, Station, App, and Audio Settings Change When Vehicle Shuts Down in Demo Mode and that this is considered a normal characteristic of the vehicle in demo mode.
PIT5653A2019-09-16. Service bulletin. EQUIPMENT. This Preliminary Information communication provides information to the technician about vehicles headrest monitors shutting off intermittently when closing driver door. Dealers should not replace any parts for this concern. Dealers should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.
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
19NA1602019-08-26. Service bulletin. ELECTRICAL SYSTEM:HORN; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This technical bulletin provides repair information to correct a customer concern of Intermittent or Continuous Horn Blowing, Horn Activation Sensitive to the Touch.
19NA0922019-08-26. Service bulletin. SERVICE BRAKES, HYDRAULIC:POWER ASSIST; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This technical bulletin provides repair information to correct a customer concern of Rear Park Assist Inoperable.
19NA0252019-08-26. Service bulletin. EXTERIOR LIGHTING:TURN SIGNAL; EXTERIOR LIGHTING:TURN SIGNAL:FLASHER UNIT; EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of the front turn signal lamp flashing fast, or inoperative.
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.
PIE0521A2019-08-19. Service bulletin. EQUIPMENT. This engineering information (EI) bulletin is requesting information from the field on the malfunction indicator lamp (MIL) illuminating to develop/validate a field fix. This version updates the Correction steps.
990089019R2019-08-19. Service bulletin. EQUIPMENT. This informational bulletin provides process information for the (GWM) and (WPC) parts return program.
PIE05262019-07-29. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. This engineering informational bulletin is requesting information from the field to determine the root cause of the overhead sunglasses compartment not being able to secure back into the resting position. Engineering to develop/Validate a Field Fix.
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.
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.
16NA2222019-07-29. Service bulletin. EQUIPMENT. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.

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