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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: Electrical system are shown. Show all

Bulletins, newest first
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.
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).
PIP56432019-06-03. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates the possibility of the wastegate retaining clip on the wastegate lever falling off and causing dtc p0299.
PIP56342019-06-03. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates that Some technicians may find DTC P0496 set in the ECM. Diagnostics should be completed to determine if the DTC is the result of an air leak in the purge system.
19NA0762019-05-28. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; BACK OVER PREVENTION: SENSING SYSTEM: CAMERA; EQUIPMENT ADAPTIVE/MOBILITY. This technical bulletin provides repair information to correct a customer concern of Blue Screen and Service Rear Vision System Message on Radio Display.
030603004Y2019-05-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
N1922121402019-05-13. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. N192212140 - Service Update. Certain 2vehicles may discharge their battery after a remote start event and then one of the following happens: Remote shutdown, time out of remote start, 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).
100845001F2019-04-22. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin provides information for electrical ground repairs using new replacement fasteners with "conductive finish".
090089002Q2019-04-22. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer.
070849020P2019-04-22. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin provides information for the IPC odometer programming method quick reference guide.
030846004V2019-04-22. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin provides information on OnStar® VCIM is currently restricted parts. By working closely with our dealers and technicians, through the part restriction process, the General Motors team will gain a better understanding of any field concerns that may develop.
16NA3422019-03-25. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to check the rearview mirror coax connector for looseness by disconnecting and reconnecting the electrical connector and to correct the customers concern for the rearview mirror video screen displaying blue.
18NA3762019-03-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides service procedure information for dealers/technicians on Radio Software Version V509 Over-the-Air Update.
060847001N2019-03-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin explains the labor operation numbers used for submitting warranty claims for module reprogramming and not when replacing a module.
18NA3762019-03-25. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This bulletin provides service procedure information for dealers/technicians on Radio Software Version V509 Over-the-Air Update.
100089005H2019-03-18. Service bulletin. ELECTRICAL SYSTEM:WIRING. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
17NA2762019-03-18. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 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.
PIT56562019-03-11. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates during a vehicle remote start, if the temperature is Currently the mode command during a remote start for temperature
PIP56252019-03-11. 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.
PIT5630B2019-03-11. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates the possible setting of B101D-39 in the OnStar module and advises of byte info to retrieve while engineering completes further investigation.
PIP5591A2018-12-17. 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.
PIT5630A2018-11-26. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. This Preliminary information communicates the possible setting of B101D-39 in the OnStar module and advises of byte info to retrieve while engineering completes further investigation.
PIT56302018-10-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates the possible setting of B101D-39 in the OnStar module and advises of byte info to retrieve and of engineering investigation.

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