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: Engine are shown. Show all
| 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. |
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| 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. |
| 19NA104 | 2019-07-01. 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. |
| 16NA383 | 2019-07-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This informational bulletin advises of a new fuel injection kit used for decarbonizing the intake valves, and explains how toptier fuels should be used to reduce carbon build up. |
| 18NA378 | 2019-07-01. Service bulletin. POWER TRAIN; ENGINE. 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. |
| N182205890 01 | 2019-06-24. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Service Update - Revised Condition Statement. Certain vehicles may have a condition where some capacitors used on the purge pump printed circuit board (PCB), may have unknown performance. These suspect capacitors are used in multiple locations on the PCB. Depending on which capacitors fail, the purge pump may not operate as intended and a malfunction indicator lamp (MIL) may illuminate. Dealers are to replace the evaporative emission purge pump. |
| N182205890 | 2019-06-24. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Service Update. Certain vehicles may have a condition where some capacitors used on the purge pump printed circuit board (PCB), may have unknown performance. These suspect capacitors are used in multiple locations on the PCB. Depending on which capacitors fail, the purge pump may not operate as intended and a malfunction indicator lamp (MIL) may illuminate. In addition, there may be pump bearing issues which could also result in stored DTCs and MIL illumination. Dealers are to replace the evaporative emission purge pump. |
| PIP5650A | 2019-06-10. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates the possibility of DTC P3075 being set current or history due to low coolant level or air trapped in cooling system. |
| PIP5652 | 2019-06-10. Service bulletin. ENGINE. This Preliminary information communicates the possibility of a rattle noise that can occur from the timing cover area due to sticking timing chain tensioner. |
| PIP5650 | 2019-06-10. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates the possibility of dtc P3075 being set current or history due to low coolant level or air trapped in cooling system. |
| PIP5649 | 2019-06-10. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. This Preliminary information communicates to the dealer that a customer may comment that their MIL is illuminated due to a P0299 set current or in history. It contains diagnostic tip information related to a potential empty fuel level concern. |
| PIP5569A | 2019-06-03. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE. This Preliminary information communicates to the dealer an issue where the vehicle's engine may crank over unprompted and not start afterward. This is the result of hooking up the Active Fuel Injector Tool incorrectly on vehicles equipped with a direct fuel injection system. This Preliminary information instructs the dealer of a repair kit they received that will prevent this issue when installed correctly. |
| PIP5578A | 2019-06-03. Service bulletin. ENGINE; EQUIPMENT. The Preliminary Information communication advises the technician that there is a part restriction for the 2.0L LSY engine. The dealer technician is advised to call the GM Product Quality Center for further assistance. |
| PIE0521 | 2019-05-20. Service bulletin. ENGINE. This engineering information (EI) bulletin is requesting information from the field on the malfunction indicator lamp (MIL) illuminating to develop/validate a field fix. |
| PIE0503B | 2019-05-20. Service bulletin. ENGINE. This engineering information PI ends the need for information from the field on reduced engine power, DTC P0299 set. |
| 19NA045 | 2019-04-22. Service bulletin. ENGINE AND ENGINE COOLING. This technical bulletin provides a procedure to replace the engine coolant flow control valve if found the cause of the customers concern of Engine Overheating or MIL Illuminated. |
| 19NA044 | 2019-04-22. Service bulletin. ENGINE. This informational bulletin provides information on a normal engine operating condition for faster emission warm up time. |
| 18NA378 | 2019-04-08. Service bulletin. POWER TRAIN; ENGINE. 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. |
| PIE0503A | 2019-03-25. Service bulletin. ENGINE AND ENGINE COOLING. This engineering information PI ends the need for information from the field on reduced engine power, DTC P0299 set. |
| 120601003C | 2019-03-25. Service bulletin. ENGINE. This Bulletin Provides Information for Repairing Engine Front Cover Oil Leak, Sealing Surface Preparation and Applying RTV Sealant. |
| PIE0503 | 2019-03-25. Service bulletin. ENGINE AND ENGINE COOLING. This engineering informational bulletin is requesting information from the field on reduced engine power, DTC P0299 set. |
| 18NA379 | 2019-03-25. Service bulletin. POWER TRAIN; ENGINE. This technical bulletin provides a procedure to program the TCM to correct the customers concern of a MIL Illuminated, Vehicle wont go above 25 mph and/or 1-2 Shifts feel like a momentary tie up. |
| 18NA378 | 2019-03-25. Service bulletin. ENGINE AND ENGINE COOLING; 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. |
| PIP5625 | 2019-03-11. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING. This Preliminary information communicates the possibility of dtc P0238 setting after service work due to the Turbocharger Air Pressure Sensor wiring connector and AC Refrigerant wiring connectors be swapped accidently diring reassembly of the engine wiring harness. |
| PIP5623 | 2019-03-11. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates that a rotational clicking noise heard after engine shut down is a design characteristic and no repairs should be attempted. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.