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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

Bulletins, newest first
16NA3382019-07-29. Service bulletin. POWER TRAIN. This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns.
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.
PIC6365A2019-07-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates information to dealers advising certain Over the air updates and USB updates have been temporarily suspended.
PIP5591B2019-07-08. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates advises the technician that the ECM part number will be placed on a parts restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
PIE0520B2019-07-01. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. This engineering information PI ends the need for information from the field for issues on Sunroof and/or Sunshade with Loss of Express Motion or Sunshade Does Not Go Past Halfway Closed and to refer to SI for further diagnosis.
080730035D2019-07-01. Service bulletin. POWER TRAIN. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
19NA1042019-07-01. 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.
16NA3832019-07-01. 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.
16NA1192019-07-01. Service bulletin. EQUIPMENT. This warranty administration bulletin provide policy information to cover GM's policy on performing GM covered vehicle services and maintenance on vehicles originating/sold in Canada.
19NA1122019-07-01. Service bulletin. SEATS; SEAT BELTS. This informational bulletin provides information for dealers/technicians on informing customers on the release of a rear seat back (60%) stuck in down position/will not raise up, and/or front seat belt height adjuster stuck in the full down position.
080089014E2019-07-01. Service bulletin. EQUIPMENT. This informational bulletin provides information for dealers/technicians on Use of Dealer Case Management (DCM) and Being Prepared for Contacting U.S. Technical Assistance (TAC).
000310006N2019-07-01. Service bulletin. TIRES. This informational bulletin provides information for dealers/technicians on Tire Radial Force Variation (RFV).
19NA1122019-07-01. Service bulletin. SEATS; SEAT BELTS. This informational bulletin provides information for dealers/technicians on informing customers on the release of a rear seat back (60%) stuck in down position/will not raise up, and/or front seat belt height adjuster stuck in the full down position.
19NA0922019-07-01. Service bulletin. BACK OVER PREVENTION; LANE DEPARTURE. This technical bulletin provides repair information to correct a customer concern of Rear Park Assist Inoperable.
18NA3782019-07-01. 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.
18NA2792019-07-01. Service bulletin. STRUCTURE:BODY:DOOR; LATCHES/LOCKS/LINKAGES; STRUCTURE. This informational bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
N1822027602019-06-24. Service bulletin. SERVICE BRAKES. Customer Satisfaction Program - Certain vehicles under certain conditions when traveling at low speed from a stop, the power brake assist system may not activate. The brakes will continue to function, but additional brake-pedal pressure may need to be applied to brake the vehicle. In addition, the Service Brake Assist, Electronic Stability Control, Traction Control, and ABS lights will turn on. Dealers will reprogram the Brake System Control Module (BSCM).
N1822013002019-06-24. Service bulletin. FUEL SYSTEM, GASOLINE. Customer Satisfaction Program. Certain vehicles may have a condition in which the fuel gauge does not accurately reflect the amount of fuel in the tank (may be overfilled or underfilled). A malfunctioning fuel level sensor may result in an incorrect gauge and the vehicle may run out of fuel unexpectedly. Replace the fuel tank sending unit.
N182205890 012019-06-24. 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.
N1822058902019-06-24. 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.
N1922195702019-06-24. Service bulletin. ELECTRICAL SYSTEM. Service Update. Certain 2019 model year Cadillac XT4 vehicles may discharge their battery after a remote start event and then one of the following happens: Remote shutdown, or time out of remote start, or entering the vehicle and pushing the ignition button to enter ACC or Run then pushing ignition button to turn vehicle off without ever having shifted from park. Additionally, due to a separate issue, certain Air Temperature Sensor diagnostic trouble codes (DTC's) could present themselves and indicate a condition in the ECM which can lead to a discharge of the battery as well. Dealers will reprogram the engine control module (ECM).
18NA2862019-06-10. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; STRUCTURE:BODY:ROOF AND PILLARS. This technical bulletin provides repair information to correct a customer concern of hearing a rattle noise in passenger or driver upper B-Pillar area.
PIP5650A2019-06-10. 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.
PIP56522019-06-10. 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.
PIC63652019-06-10. Service bulletin. EQUIPMENT. This Preliminary information communicates information to dealers advising certain Over the air updates and USB updates have been temporarily suspended.

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