WenmarOpen by Wenmar Pro

Service bulletins for the 2018 Cadillac XT5

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.

1020 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
150603002H2018-04-23. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This informational bulletin provides information on approved warranty part numbers for original equipment batteries
150089005A2018-04-23. Service bulletin. EQUIPMENT; ENGINE. This warranty administration bulletin provides dealership personnel with policy and procedure requirements for essential tools that include consumable parts (U.S. Only).
150089004B2018-04-23. Service bulletin. EQUIPMENT. This informational bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered seepage.
17NA2922018-04-23. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:WIRING. This technical bulletin provides a procedure to inspect the wires and/or replace the Valve Rocker Arm Oil Control Valves if the DTCs listed are set.
17NA2842018-04-23. Service bulletin. STEERING:HYDRAULIC POWER ASSIST SYSTEM. This technical bulletin provides a procedure to reprogram the power steering control module to correct a condition of Reduced Steering Assist Message with DTC C0460 Sym 5A due to a software abnormality.
17NA2712018-04-23. Service bulletin. WHEELS:RIM. This bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customers concern of wheel clicking.
16NA4072018-04-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This informational bulletin advised the technician not to do anything about the DTC set.
16NA407 42018-04-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This informational bulletin advised the technician not to do anything about the DTC set.
PIP5095E2018-03-12. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon and may also have an oil or coolant leak. Technician may find coolant or oil in a spark plug tube. If the Spark Plug Tube is leaking and it is determined that the oil or coolant is not coming from a leak above the spark plug then replace the cylinder Head, spark plug and coil.
PIP5486B2018-03-12. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. This Preliminary information communicates possible concerns and a diagnostic strategy to locate and repair various noises within the engine as well as some misfire causes.
PIC6315B2018-03-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that in the radio settings some of the vehicle personalization selections within the Comfort and Convenience menu are missing at times. Technician will need to perform a scan for Diagnostic Trouble Codes. Technician will need to follow published Service Information diagnostics if there are Diagnostic Trouble Codes present. If the concern is and intermittent this Preliminary Information communication will be updated with a repair. When the personalization selections are not missing from the Comfort and Convenience menu but they are missing from other menus such as the Climate and Air Quality, Collision/Detection Systems, and Lighting menus, refer to bulletin 17-NA-086. Memory seat adjustments may not be available tech will need to perform a Memory Seat Module replacement/programming.
PIT5411J2018-03-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary Information communication advises the technician that the Human Machine Interface, Radio or Tuner, radio controls, Integrated Center Stack, display, and Media Disc Players are placed on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
PIP4670E2018-03-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about a no start or another concern after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.
PIP55522018-03-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary information communicates a concern of a MIL on with P0459 or P0443 setting and engineering investigating this condition.
PIP55502018-02-21. Service bulletin. ENGINE. This Preliminary information communicates a possible oil leak from the oil cooler and probable cause and repair instruction.
PIP5226B2018-02-21. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller rockers to inspect them. Only replace the roller rocker that is missing needle bearings. Be sure to clean the oil drains to retrieve the needle bearings. Each roller rocker has 66 bearings.
PIT3271H2018-02-21. Service bulletin. WHEELS. This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
PIP5493E2018-02-21. Service bulletin. FUEL SYSTEM, GASOLINE. This Preliminary information communicates diagnostic tips for misfires on active fuel management cylinders and engineering investigations into cylinder 6 misfire on XT5 and cylinder 4 misfire on LaCrosse both of which are 2017. Changes to Preliminary informationinclude adding MY2018, advising of calibration for previous investigation and adding pictures to identify concern.
PIP5540A2018-02-21. Service bulletin. ENGINE. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
PIP55452018-02-21. Service bulletin. BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE; STEERING:HYDRAULIC POWER ASSIST:PUMP. This Preliminary information communicates a possible noise from the water pump causing a DTC and the diagnostics for the repair.
PIT56062018-02-21. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS; VEHICLE SPEED CONTROL; STEERING; FUEL SYSTEM, GASOLINE. This Preliminary information communicates an Intermittent No Crank, No Start, or Reduced Power loss of data multiple U codes or Intermittent Power Door Locks inoperative. Inspect harness for chaffed by the I-shaft at the base of the steering column. If chaffed, repair damaged wires and zip tie the harness away from the I-shaft. Also Inspect the HVAC drain hose is properly routed and not plugged.
PIP55402018-02-21. Service bulletin. EQUIPMENT. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components.
PIC5650D2018-01-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.
PIT5354B2018-01-16. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary Information communication advises the technician how to determine if the vehicle is equipped with wireless fidelity. Technician should check the Regular Production Option Code list for (VV4).
PIC5491K2018-01-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have an OnStar system that will not power up. Technician should turn off the ignition and cancel retained accessory power. After the vehicle has powered down remove power to the OnStar module for five minutes. After the power has been removed for five minutes, if the OnStar system is working release the vehicle. If the OnStar system is still inoperative continue with published Service Information diagnostics.

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