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
| 19NA087 | 2019-09-23. Service bulletin. EQUIPMENT. This Technical bulletin provides information for dealers/technicians on Radio Software Version V805 Over-the-Air Update Release. |
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| 18NA378 | 2019-09-23. Service bulletin. POWER TRAIN. This technical bulletin provides a procedure to replace the fluid cooler exchanger and the torque converter or transmission and torque converter, depending on if the exchanger leaked into the transmission fluid. |
| 18NA146 | 2019-09-23. Service bulletin. EQUIPMENT. This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only). |
| 17NA276 | 2019-09-23. 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. |
| 16NA109 | 2019-09-23. Service bulletin. STEERING. This technical bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear. |
| PIT5653A | 2019-09-16. 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. |
| PIT5663A | 2019-09-16. 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 |
| 19NA160 | 2019-08-26. 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. |
| 19NA092 | 2019-08-26. 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. |
| 19NA025 | 2019-08-26. 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. |
| 19NA010 | 2019-08-26. 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. |
| PIE0521B | 2019-08-19. Service bulletin. ELECTRICAL SYSTEM. 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. |
| PIE0521A | 2019-08-19. 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. |
| 990089019R | 2019-08-19. Service bulletin. EQUIPMENT. This informational bulletin provides process information for the (GWM) and (WPC) parts return program. |
| PIP5645B | 2019-08-12. Service bulletin. POWER TRAIN. This Preliminary information communicates that the transmission assembly, the torque converter assembly, and the Stack Plate Heat Exchanger (Automatic Transmission Fluid Cooler Exchanger) restriction has ended. |
| PIP5660 | 2019-08-12. Service bulletin. ENGINE; ELECTRICAL SYSTEM:WIRING. This Preliminary information communicates the possibility of a reduced power message with dtc p2101 and/or p1516 due to potential throttle body issue. |
| PIE0526 | 2019-07-29. 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. |
| 1308116001E | 2019-07-29. 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. |
| 100845001G | 2019-07-29. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish. |
| 090604026Q | 2019-07-29. 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. |
| 060847001O | 2019-07-29. 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. |
| 050604022Q | 2019-07-29. 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. |
| 000601012J | 2019-07-29. 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. |
| 19NA141 | 2019-07-29. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This Technical bulletin provides a procedure for dealers/technicians to correct a condition of Instrument Panel Cluster or Head-Up Display (HUD) Will Intermittently Black Out or Reset. |
| 19NA104 | 2019-07-29. 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.