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Service bulletins for the 2015 Cadillac XTS

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.

1634 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
02-07-30-029W2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION. This informational bulletin provides information to the technician on what parts of an engine or transmission will require the PQC to be notified.
02-07-30-029V2018-05-21. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING; EQUIPMENT. This informational bulletin provides information to the technician on what parts of an engine or transmission will require the PQC to be notified.
PI0938A2018-05-21. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION. This preliminary bulletin provides information on what labor operation number to use for various electrical/electronic control issues.
PI1234B2018-05-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. This preliminary information bulletin provides a procedure on a brief rattle or tick when revving the engine when the vehicle is in P (Park) or N (Neutral). The same rattle or tick can sometimes be heard at the beginning or end of a vehicle acceleration while in D (Drive).
17-NA-0662018-05-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This warranty administration bulletin provide policy information for automatic transmission Oil Cooler Flush and flow test.
080730035C2018-05-21. Service bulletin. POWER TRAIN. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
060089031E2018-05-21. Service bulletin. ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION. This informational bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
16NA3382018-05-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. This Bulletin provides guidelines 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.
PIP5090F2018-05-07. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary Information communication provides information to the technician about vehicles that may have a noise, vibration or shudder on acceleration from a stop. Technician should replace the right hand axle shaft retaining ring using part number 90223082. Technician will need to inspect the splines on the half shaft for damage.
PIP5090E2018-05-07. Service bulletin. POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles that may have a noise, vibration or shudder on acceleration from a stop. Technician should replace the right hand axle shaft retaining ring using part number 90223082. Technician will need to inspect the splines on the half shaft for damage.
16NA3382018-05-07. Service bulletin. POWER TRAIN. This Bulletin provides guidelines for Dealers to determine whether or not they need to contact the PQC for an engine, transmission or transfer case assembly replacement and information explaining the PQC process, Global Warranty Management Transaction submission, vehicle repair record retention and proper handling of assembly returns.
PIP5296B2018-01-22. Service bulletin. POWER TRAIN. This Preliminary Information communication advises the technician of a possible grind or growl noise from the transmission while moving. If the technician disassembles the transmission, technician may find a front differential drive pinion gear bearings and or differential carrier bearings are damaged. Technician will need to contact General Motors Technical Assistance Center before attempting to remove the damaged bearings.
06-00-89-031C2017-12-22. Service bulletin. POWER TRAIN; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin provides information to dealership personnel on proper engine and automatic transmission/transaxle identification.
030729004I2017-12-22. Service bulletin. POWER TRAIN. This informational bulletin was created for the Manual Transmission Operating Characteristics. The different noises caused by driver habit, weather conditions , and normal manual transmission noises.
PIC6042A2017-12-14. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; STEERING. This Preliminary Information communication provides information to the technician about vehicles that if replacement of either shift paddle is necessary, the steering wheel does not need to be replaced nor does it need to be removed to replace either shift paddle.
16-NA-3382017-08-31. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Bulletin provides guidelines 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.
PIC6048A2017-08-15. Service bulletin. STEERING; LANE DEPARTURE: ASSIST; POWER TRAIN. This Preliminary Information communication advises the technician that some customers may comment on the operation of their haptic seat during a Lane Keep Assist event. Lane Keep Assist works differently than Lane Departure Warning. The Lane Keep Assist icon is solid amber, Forward Camera Module is actively commanding a torque to Electronic Power Steering. This means that the driver should also feel some feedback from the steering wheel. No Chimes or haptic in the seat. Lane Keep Assist icon is flashing amber; Forward Camera Module is actively commanding torque to Electronic Power Steering. This will also be accompanied with Lane Departure Warning chimes and haptic in the seat feedback based on the setting chosen in the vehicle settings. This will take place when the vehicle has crossed lane marking by (40 cm) or (15.75 in).
PIP5296A2017-08-15. Service bulletin. POWER TRAIN. This Preliminary Information communication advises the technician of a possible grind or growl noise from the transmission while moving. If the technician disassembles the transmission, technician may find a front differential drive pinion gear bearings and or differential carrier bearings are damaged. Technician will need to contact General Motors Technical Assistance Center before attempting to remove the damaged bearings.
PIC6048F2017-08-15. Service bulletin. STEERING; LANE DEPARTURE; POWER TRAIN; ELECTRICAL SYSTEM. This Preliminary Information communication advises the technician that some customers may comment on the operation of their haptic seat during a Lane Keep Assist event. Lane Keep Assist works differently than Lane Departure Warning. The Lane Keep Assist icon is solid amber, Forward Camera Module is actively commanding a torque to Electronic Power Steering. This means that the driver should also feel some feedback from the steering wheel. No Chimes or haptic in the seat. Lane Keep Assist icon is flashing amber; Forward Camera Module is actively commanding torque to Electronic Power Steering. This will also be accompanied with Lane Departure Warning chimes and haptic in the seat feedback based on the setting chosen in the vehicle settings. This will take place when the vehicle has crossed lane marking by (40 cm) or (15.75 in).
PIC60482017-08-15. Service bulletin. ELECTRICAL SYSTEM; LANE DEPARTURE; STEERING; POWER TRAIN. This Preliminary Information communication advises the technician that some customers may comment on the operation of their haptic seat during a Lane Keep Assist event. Lane Keep Assist works differently than Lane Departure Warning. The Lane Keep Assist icon is solid amber, Forward Camera Module is actively commanding a torque to Electronic Power Steering. This means that the driver should also feel some feedback from the steering wheel. No Chimes or haptic in the seat. Lane Keep Assist icon is flashing amber; Forward Camera Module is actively commanding torque to Electronic Power Steering. This will also be accompanied with Lane Departure Warning chimes and haptic in the seat feedback based on the setting chosen in the vehicle settings. This will take place when the vehicle has crossed lane marking by (40 cm) or (15.75 in).
PIT54422017-08-15. Service bulletin. POWER TRAIN; EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician of an engine power reduced message on the driver information center after performing the Canada Onstar® 4G upgrade. If the concern is present park the vehicle outside and call General Motors Technical Assistance Center.
PIP52962017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary Information communication advises the technician of a possible grind or growl noise from the transmission while moving. If the technician disassembles the transmission, technician may find a front differential drive pinion gear bearings and or differential carrier bearings are damaged. Technician will need to contact General Motors Technical Assistance Center before attempting to remove the damaged bearings.
PI1487A2017-08-15. Service bulletin. POWER TRAIN; STEERING. This preliminary informational bulletin provides diagnostic and repair information to correct a customer concern of IPC gauges sweep, loss of power steering assist, intermittent no crank, reduced engine power and multiple U-codes.
PIP5223A2017-08-15. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This Preliminary Information communication advises the technician that the Engine Control Module part number 12662034 was placed on restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.
PIP52232017-08-15. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This Preliminary Information communication advises the technician that the Engine Control Module part number 12662034 is on restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.

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