Service bulletins for the 2015 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.
1797 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| PIT5354 | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication advises the technician how determine if the vehicle is equipped with wireless fidelity. Technician should check the Regular Production Option Code list for (VV4). |
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| PIC5492C | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B101D-37 history in the Vehicle Communication Interface Module or telematics communication interface control module. Engineering has determined that this code will only display in history on the scan tool and will not cause issues with OnStar system operation. |
| PIP5029F | 2017-08-15. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about vehicles that have a Malfunction Indicator Lamp on or engine misfire, rough idle, extended crank, or crank no start in some cases. Technician will need to perform published Service Information diagnostics. If technician finds carbon an upper engine and valve cleaning should be performed. |
| PIC6049 | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about the wireless charging module has been placed on restriction through the General Motors Technical Assistance Center. Dealer will need to call General Motors Technical Assistance Center for further assistance. Customer may state that the phone does not charge, charges slow, moves out of charging spot, or charges intermittently. Technician will need to gather information from the customer. The information needed make, model, and wireless charging back cover model. Does customer currently uses wireless charging at home and /or office, if so what brand. Is the phone Bluetooth paired to the vehicle? Does customer run applications from the phone? If it is a ATS or CTS customer are they aware of the vehicle?s Heater-Vent-Air Conditioning cooling the phone when it is ON it extends time phone will charge. Also is the cover being used from the phone provider? When the technician calls General Motors Technical Assistance Center select the Electrical prompt. |
| PIC6048 | 2017-08-15. 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). |
| PIT5344 | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary Information communication provides information to the technician about vehicles with an inoperative CD player. Technician will need to contact General Motors Technical Assistance Center for further assistance. |
| PIT5436 | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles with OnStar WIFI is inoperative after a VCIM replacement. Technician will need to contact General Motors Technical Assistance Center with module information. |
| PIT5264B | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This Preliminary Information communication provides information to the technician about vehicles that are travelling from Canada to the United States. While in the United States they are unable to receive Turn-by-Turn directions. Due to the existing cellular provider not having roaming agreements in areas outside of Canada to support transmitting of the packet data required for Turn-By-Turn feature to operate. The customer has 3 options while traveling through the United Sates. First if the vehicle is equipped with a navigation radio they can request a "Destination Download" to the vehicle. Second if the customer uses the OnStar RemoteLink app they can send the directions to the vehicle. The third option would be to have the vehicle loaded with a ?500 phone number? The customer will no longer be able to use their Hands Free Calling minutes when the new 500 phone number is loaded. If a customer chooses to restore Hands Free Calling in the future a new phone number will be assigned to the vehicle; previous phone numbers are not available. |
| PIP4690G | 2017-08-15. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. This Preliminary Information communication provides information to the technician about vehicles that may have an oil pressure gauge is indicating that the engine appears to be operating with very high oil pressure. Under various engine operating conditions up to 110 pressure per square inch of oil pressure may be displayed on the oil pressure gauge. This should be considered as normal operation during a cold engine start-up. |
| PIC6099A | 2017-08-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; LATCHES/LOCKS/LINKAGES:TRUNK LID:LOCK; ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that have a key fob, touch pad, or inside release button that will not open the trunk. Technician will need to inspect the Emergency Trunk Release handle bezel to be positioned incorrectly. Technician should re seat the Emergency Trunk Release handle into the bezel. Any sort of preload on the ETR cable will not allow the latch to release when any of the electric switches are used. |
| PIP5318 | 2017-08-15. Service bulletin. ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician about vehicles that have a misfire event that usually occur at speeds of 70 miles per hour, 3rd Gear, and 3500 ? 4500 revolutions per minute. Dealer should advise customer to refer to TopTierFuel.com for availability in their respective area and fill with 91 or higher octane level fuel. |
| PIC6121 | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary Information communication provides information to the technician about vehicles that will the radio display stay on when accessing the Integrated Center Stack compartment door. This is a normal operating characteristic of this model year vehicle. |
| PIC6073B | 2017-08-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about the Media Oriented Systems Transport Bus Diagnostic Tool Kit (EL-51578) has been released to help diagnose any of the Media Oriented Systems Transport bus concerns. The kit contains header connectors that are installed to bypass Media Oriented Systems Transport bus modules. The bypass connector also contains a terminal for verifying Media Oriented Systems Transport control circuit voltages. Technician should review Media Oriented Systems Transport bus description and operation and Diagnostic Trouble Code U0028 diagnostic procedures. |
| PIC6117 | 2017-08-15. Service bulletin. EQUIPMENT; SERVICE BRAKES, HYDRAULIC. This Preliminary Information communication provides information to the technician abut vehicles that have excessive amount of brake dust on the wheels. Dealer should advise the customer this is a normal characteristic of the performance race pads that are installed on the vehicle, and to reference the owner?s manual for cleaning instructions. |
| PIT5411D | 2017-08-15. 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. |
| PIT5236F | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B101D stored in Telematics Communication Interface Control Module. Technician will check Global Warranty Management system for customer satisfaction program 15086 status. If the status of the customer satisfaction program 15086 was not completed follow the steps to get the Telematics Communication Interface Control Module replaced. If the status of customer satisfaction program 15086 is found completed contact General Motors Technical Assistance Center OnStar group for further assistance. |
| PIT5236E | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B101D stored in Telematics Communication Interface Control Module. Technician will use Global Diagnostic System 2 to review the Firmware Over-the-Air version. If the Firmware Over-the-Air version on the scan tool equals 6708 the technician will need to contact General Motors Technical Assistance Center for further assistance. If the Firmware Over-the-Air version on the scan tool is lower than 6708 Dealer can order the part thought the Instrument Sales and Service website process. |
| PIC5932A | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about customers that may complain of various concerns when using Bluetooth components. Technician should use the Preliminary Information to gather information from the customer on their Bluetooth device and the concern they are having before calling General Motors Technical Assistance Center. |
| PIC6093A | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about a service column lock message. Technician will find diagnostic trouble code B2897 symptom 05 set as history. Any of the follow scenarios could set the code. 1. Power mode is OFF, OPEN the Driver Door, then press the Ignition Switch within 100ms (power mode changes to ACC or RUN). 2. Power mode is ACC or RUN, the Driver Door is OPEN, then change power mode to OFF, and close the Driver Door within 300ms. 3. Power mode is OFF, then OPEN and CLOSE the Driver Door quickly?in less than 300ms. If these are ruled out as the cause of the code or it is set current follow normal service information diagnostics. If the scenarios are the cause of the concern this is a normal operation, communicate to the customer that General Motors is working on a solution for this concern. |
| PIT5444 | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about the text messaging feature on some newer General Motors infotainment systems. Pair the iPhone to the system then enter the Bluetooth settings menu, select the ?i? icon next to the vehicle name in the device and enable show notifications. The text messaging feature will be available on the next ignition cycle. However with iPhones text messages cannot be responded to when using the infotainment system, they can only be received. For android devices pair the phone to the system during the pairing process the phone will ask you to allow the vehicle to access the device contacts. A second question will pop up on the device asking to allow the vehicle to access the message access profile. Both have to be allowed for the text messaging feature to work. |
| PIC6110A | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication for the dealer to please communicate to the customer this condition is a normal operating characteristic of their vehicle. Customer's timeshift audio playback is choppy, distorted, skipping, or garbled. |
| PIT5443 | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary Information communication advises the technician of a concern where the Onstar® menu is missing from the radio display. Pressing the white Onstar® push to talk button and say hide Onstar® menu will hide the menu and saying unhide menu will make the menu come back again. |
| PIC6108A | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communication provides information to the technician to download the USB software from TIS2WEB using the vehicle identification number every time a programming event of the human machine interface module is needed. Damage could be caused to the module if USB programmed with the incorrect software. |
| PIC6110 | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication for the dealer to please communicate to the customer this condition is a normal operating characteristic of their vehicle. Customer's timeshift audio playback is choppy, distorted, skipping, or garbled. |
| PIC5491G | 2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT:ELECTRICAL. 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.