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Service bulletins for the 2018 Cadillac CTS

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.

1149 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
090604026R2019-09-23. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
080730026F2019-09-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This informational bulletin provides information on Some vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
070601016F2019-09-23. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
000601026M2019-09-23. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
18NA1462019-09-23. Service bulletin. EQUIPMENT. This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
16NA1092019-09-23. Service bulletin. STEERING. This technical bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.
PIP5407A2019-09-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have Diagnostic Trouble Code P06DD or no or low oil pressure. Technician will replace timing chain tensioner guide. If oil pump face is damaged and or worn thru replace oil pump. Inspect bearings for damage wear due to debris from oil pump.
PIC6123E2019-09-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician for the adaptive cruise control or lane keep assist unavailable message in the driver?s information center after the vehicle has been parked in direct sunlight and high ambient temperatures. The cameras electronic control unit?s internal operating temperature range is -40 degrees Celsius to 85 degrees Celsius. If the temperature of the electronic control unit of the camera module exceeds 85 degrees Celsius the image processor will no longer function resulting in adaptive cruise control and lane keep assist to be unavailable until the temperature falls to below the maximum operating temperature range
PIC6086F2019-09-16. Service bulletin. VISIBILITY. This Preliminary Information communication provides the technician with steps to resolve the issue of an oily substance that may be found on the inside windshield surface, and appears to be leaking from the rear view mirror area. Technician will remove the moisture sensor and clean the glass and mounting bracket with alcohol wipe. If the gel separates from the sensor the sensor will need to be replaced.
PIC6123D2019-09-16. Service bulletin. ELECTRICAL SYSTEM; LANE DEPARTURE; ENGINE; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. This Preliminary Information communication provides information to the technician for the adaptive cruise control or lane keep assist unavailable message in the driver?s information center after the vehicle has been parked in direct sunlight and high ambient temperatures. The cameras electronic control unit?s internal operating temperature range is -40 degrees Celsius to 85 degrees Celsius. If the temperature of the electronic control unit of the camera module exceeds 85 degrees Celsius the image processor will no longer function resulting in adaptive cruise control and lane keep assist to be unavailable until the temperature falls to below the maximum operating temperature range
PIC6340B2019-09-16. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary information communicates information to not replace any parts for Favorites unavailable message intermittently. This PI will be deleted and a bulletin created when new software is available.
19NA1422019-08-26. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN. This technical bulletin provides information for new transmission oil to use, a procedure for exchanging the old fluid and adding the new fluid to a service transmission.
19NA0102019-08-26. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. This informational bulletin provides information for dealers/technicians on Information on Head-Up Display (HUD) on Vehicles Model Year 2017 and Newer Has Rotational Feature that Allows for Adjusting of the Angle of the HUD Image.
N1922117402019-08-26. Service bulletin. ELECTRICAL SYSTEM. Customer Satisfaction Program. Certain 2018 model year Cadillac ATS, CTS, XTS, and GMC Terrain vehicles may have a condition where they could lose infotainment audio or lose the warning ?chimes?. GMC branded vehicles could also display the Cadillac CUE logo at startup. Dealers will inspect, and if necessary, reprogram the vehicle with the correct radio software and calibration.
990089019R2019-08-19. Service bulletin. EQUIPMENT. This informational bulletin provides process information for the (GWM) and (WPC) parts return program.
18NA3552019-08-19. Service bulletin. POWER TRAIN. This technical bulletin provides information for new transmission oil to use and a procedure for exchanging the old fluid and adding the new fluid to correct a shake/shudder during light throttle acceleration condition.
PIP56632019-08-12. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary information communicates AFM / DFM usage Information. providing additional information on the AFM and DFM systems
PIT56982019-08-12. Service bulletin. EQUIPMENT. This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.
PIC6208D2019-08-12. Service bulletin. EQUIPMENT. This Preliminary information communicates that when a customer or technician attempts to add a new transmitter to a vehicle following the adding transmitters without Service Programming System procedure the procedure will not complete and a message "Remote Learn Pending" will be displayed on the Driver Information Center. In the past to perform the new transmitter procedure only one previously learned transmitter was required but this is no longer the case. Now, two previously learned transmitters are required to be placed into the cup holder and then the new transmitter to be programmed placed in the transmitter pocket. If this new procedure is not followed, the "adding transmitters without Service Programming System" cannot be performed. The technician will be forced to add a transmitter using Service Programming System.
PIC5779K2019-08-12. Service bulletin. STRUCTURE. This Preliminary Information communication provides the technician with information on the proper washing of the bright aluminum moldings to avoid the moldings from getting damaged. It is recommended that a non-alkaline solution be used for preparation & washing of the bright aluminum moldings.
PIT5569A2019-08-12. Service bulletin. WHEELS; VEHICLE SPEED CONTROL. This Preliminary information communicates direction and examples when diagnosing multiple DTCs, one of which includes U**** Byte 71 DTC.
PIT3099R2019-08-12. Service bulletin. EQUIPMENT. This Preliminary Information communication provides information to the technician about installing General Motors Accessory parts/kits. Technicians should refer to Service Information for information regarding most accessories. Technicians may also contact Partech and/or the Techline Customer Support Center for additional support.
PIC6137F2019-08-12. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that the engine stops running after extended idle with shifter in park. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. If the customer exits the vehicle with the fob in their possession while the engine is running and the shifter is left in park, the engine will shut off after 1 - 2.5 hours depending on model year. If the customer is sitting in the vehicle with the engine running and the fob is in the vehicle, the Passive Entry Passive Start system will reach out and look for the fob after 1 - 2.5 hours depending on model year. If the fob is located, the timer will reset an additional 1 - 2.5 hours depending on model year.
PIE0497C2019-07-29. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This engineering information PI ends the need for further information from the field to determine a root cause on a MIL ON, DTC P1070 condition. If a vehicle is encountered with this condition, refer to SI for further diagnosis.
1308116001E2019-07-29. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

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