Service bulletins for the 2016 Cadillac CT6
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.
1371 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| PIP5282A | 2017-05-18. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ABOUT THE CALCULATION AND OPERATION OF THE ENGINE OIL LIFE MONITOR. THE MONITOR CALCULATES THE PERCENT OF OIL LIFE REMAINING, BASED ON 3 PATHWAYS. THE FIRST PATHWAY FOR OIL LIFE CALCULATION IS ENGINE REVOLUTIONS. THE SECOND PATHWAY FOR OIL LIFE CALCULATION IS THE MILEAGE FORM THE LAST REST FOR ALL GENERAL MOTORS POWERTRAINS EXCEPT THE VOLT. THE THIRD PATHWAY FOR OIL LIFE CALCULATION IS THE AMOUNT OF TIME THE OIL IS IN THE ENGINE. THE VOLT USES A 2 YEAR TIMER INSTEAD OF 1 YEAR. IT ALSO USES THE ENGINE REVOLUTION COUNTER. IT DOES NOT USE THE MILEAGE PATHWAY TO COUNT DOWN. |
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| PIC6220 | 2017-05-15. Service bulletin. BACK OVER PREVENTION: CAMERA SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES WITH AN INTERMITTENT LOSS OF GRIDLINES IN THE REAR CAMERA DISPLAY SCREEN AND A "SERVICE REAR VISION SYSTEM" MESSAGE THAT BOTH HAPPEN AT THE SAME TIME. TECHNICIAN SHOULD CHECK FOR DIAGNOSTIC TROUBLE CODES AND FOLLOW PUBLISHED SERVICE INFORMATION DIAGNOSTICS FOR THE DIAGNOSTIC TROUBLE CODES. IF NOT DIAGNOSTIC TROUBLE CODES STORED AND THE CONCERN WAS DUPLICATED OR THE CUSTOMER DESCRIBED THE CONCERN, DEALER SHOULD COMMUNICATE TO THE CUSTOMER THAT WE APOLOGIZE FOR THIS INCONVENIENCE AND THAT GENERAL MOTORS IS CURRENTLY EVALUATING THIS CONCERN. |
| PIC6216 | 2017-05-15. Service bulletin. ELECTRICAL SYSTEM. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES VOICE RECOGNITION INOPERATIVE FOR CALLING BLUETOOTH PHONE CONTACTS. TECHNICIAN WILL NEED TO CLEAR ALL PRIVATE DATA AND REPAIR ANY PHONES THAT WERE DELETED. |
| PIC6177A | 2017-05-05. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES THE TECHNICIAN WITH INFORMATION ON VEHICLES WITH NAVIGATION RADIO REGULAR PRODUCTION OPTION CODE IO6 OR UY4 THAT DEFAULTS TO WEST VIRGINIA INSTEAD OF VIRGINIA ON A MANUAL ENTRY. GENERAL MOTORS ENGINEERING IS CURRENTLY WORKING ON A SOLUTION FOR THIS CONCERN. |
| PIC6073C | 2017-05-05. Service bulletin. STEERING. 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. |
| PIC6048E | 2017-05-05. Service bulletin. STEERING:ELECTRIC POWER ASSIST 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). |
| PIC5491J | 2017-05-02. 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. |
| PIC5491J | 2017-04-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. 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. |
| PIT5482B | 2017-03-23. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE A "SERVICE FRONT CAMERA" MESSAGE ON THE DRIVER INFORMATION CENTER INTERMITTENTLY. WHEN THE TECHNICIAN USES THE SCAN TOOL TO CHECK FOR DIAGNOSTIC TROUBLE CODES A HISTORY U023A AND/OR U026A MAY BE SET IN THE INSTRUMENT PANEL CLUSTER AND/OR BODY CONTROL MODULE. IT IS IMPORTANT THAT THE TECHNICIAN DOES NOT REPLACE THE FRONT VIEW CAMERA MODULE FOR THIS CONCERN. TECHNICIAN WILL REPROGRAM THE FRONT VIEW CAMERA MODULE WITH THE LATEST SOFTWARE USING SERVICE PROGRAMMING SYSTEM. |
| PIT4720D | 2017-03-22. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN THAT AFTER REPLACING THE INSTRUMENT PANEL CLUSTER THE EXCHANGE CENTER IS UNABLE TO PROGRAM THE ACTUAL MILEAGE ON THE ODOMETER OR THE ACTUAL MILEAGE IS UNKNOWN. DEALER WILL NEED TO FOLLOW DEALER TO THE GENERAL MOTORS SERVICE POLICIES AND PROCEDURES MANUAL SECTION 5.2.4 ODOMETER SERVICING. |
| PIP5226A | 2017-03-21. Service bulletin. EQUIPMENT. 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. |
| PIC6170 | 2017-03-17. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN WITH THE STEPS NEED TO DIAGNOSE AND REPAIR VEHICLE THAT MAY HAVE A CONCERN WITH NAVIGATION ICON NOT SHOWING THE CORRECT LOCATION THEN JUMPING TO THE CORRECT LOCATION. THE POSITION INDICATOR MAY SHOW THE VEHICLE TURNING IN THE OPPOSITE DIRECTION OR MAY SHOW THE VEHICLE TRAVELING OFF THE ROAD. TECHNICIAN WILL INSPECT THE HUMAN MACHINE INTERFACE MOUNTING. FOLLOW SERVICE INFORMATION FOR THE CORRECT ORIENTATION OF THE HUMAN MACHINE INTERFACE. |
| PIE0369 | 2017-03-13. Service bulletin. ENGINE; ELECTRICAL SYSTEM. THIS ENGINEERING INFORMATIONAL BULLETIN IS REQUESTING INFORMATION FROM THE FIELD WITH THE CONDITIONS OF SES LIGHT IS ON AND THE VEHICLE MAY EXHIBIT DRIVEABILITY CONCERNS. |
| 00-03-10-003U | 2017-02-21. Service bulletin. EQUIPMENT. THIS WARRANTY ADMINISTRATION BULLETIN PROVIDES INFORMATION ON THE TIRES SUPPLIED WITH A NEW VEHICLE ARE COVERED BY GENERAL MOTORS AGAINST DEFECTS IN MATERIAL OR WORKMANSHIP UNDER THE BUMPER-TO-BUMPER NEW VEHICLE LIMITED WARRANTY. |
| 15667 | 2017-01-30. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 15667 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO CHECK AND ADJUST TRANSMISSION FLUID LEVELS ON THE VEHICLES LISTED ABOVE. THESE VEHICLES MAY EXPEL EXTRA TRANSMISSION FLUID OUT OF A VENT FITTING AND HOSE ON THE TOP OF THE TRANSMISSION. |
| 49870 | 2017-01-24. Service bulletin. EQUIPMENT. 49870 - SERVICE UPDATE. CERTAIN 2016 MODEL YEAR CADILLAC CT6 VEHICLES MAY HAVE A CONDITION WHERE GROUND CONTACT OF THE SPLASH GUARDS MAY RESULT IN BREAKAGE, SEVERE WEAR OF THE SPLASH GUARDS, AND POTENTIALLY BUCKLE THE FENDER’S INNER FLANGE. DEALERS WILL UN-INSTALL THE FRONT AND REAR SPLASH GUARDS, AND PLUG THE DRILLED HOLES WITH PUSH PINS. |
| 48050 | 2017-01-24. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. 48050 - SERVICE UPDATE. CRUISE CONTROL CANNOT BE ENGAGED. CRUISE CONTROL ICON IN CLUSTER WILL REMAINS WHITE, INSTEAD OF TURNING GREEN, WHEN DRIVER ATTEMPTS TO ACTIVATE CRUISE CONTROL. REPROGRAM THE ACTIVE SAFETY CONTROL MODULE. |
| 44470 | 2017-01-24. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. 44470 - CUSTOMER SATISFACTION PROGRAM. CERTAIN 2016 MODEL YEAR CHEVROLET CAMARO AND CADILLAC CT6 VEHICLES, EQUIPPED WITH AN 8-SPEED AUTOMATIC TRANSMISSION (RPO M5T OR M5N), MAY HAVE BEEN BUILT WITH AN INCORRECTLY MACHINED TORQUE CONVERTER PRESSURE PLATE. OVER TIME, THIS CONDITION COULD RESULT IN A SHUDDER OR VIBRATION, FLUCTUATIONS ON THE TACHOMETER AND POSSIBLE TORQUE CONVERTER FAILURE. REPLACE THE TRANSMISSION. |
| 43880 | 2017-01-23. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 43880 - SERVICE UPDATE. FOR VEHICLES EQUIPPED WITH A START/STOP ENGINE CONTROL OPTION (RPO KL9), THE SYSTEM LEVEL INTERACTIONS RELATED TO THE TRANSITION OF RUN/CRANK AND ACCESSORY INPUTS TO THE ENGINE CONTROL MODULE (ECM) DURING A CRANK EVENT ARE COMPROMISED. THIS RESULTS IN COMMUNICATION ISSUES BETWEEN THE ECM AND THE INTELLIGENT BATTERY SENSOR. THE CHECK ENGINE LIGHT WILL ILLUMINATE AND THE START/STOP SYSTEM IS SUSPENDED WHILE THE FAULT IS ACTIVE, RESULTING IN DEGRADED FUEL ECONOMY. DEALERS ARE TO REPROGRAM THE ENGINE CONTROL MODULE. |
| 10-08-110-001E | 2017-01-19. Service bulletin. EQUIPMENT. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION ON THE PROPER USE OF FLOOR MATS. |
| 16-NA-219 | 2017-01-18. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPROGRAM THE HMI MODULE TO CORRECT A CONDITION OF GPS INOPERATIVE, RED LINE ACROSS GPS INDICATOR OR THE LOCATION IS STUCK IN WARREN MICHIGAN. |
| 16-NA-207 | 2017-01-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT; POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFT; EQUIPMENT:ELECTRICAL. THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPLACE A SHIFTER CABLE TO CORRECT THE CUSTOMERS CONCERN OF A VIBRATION AND/OR NOISE FROM THE SHIFTER ASSEMBLY DURING AGGRESSIVE DRIVING AND PARKING MANEUVERS WHEN WARM. |
| 16-NA-198 | 2017-01-17. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY:SUN/MOON ROOF ASSEMBLY. THIS TECHNICAL BULLETIN PROVIDES REPAIR INFORMATION ON SUNROOF AIR DEFLECTOR DAMAGE, CAUSED BY AN INTERFERENCE BETWEEN THE DEFLECTOR AND THE SUNROOF HOUSING FRONT BEAM AND RAILS. |
| PIT5389A | 2016-11-03. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS FOR DIAGNOSING THE CONCERN. THE VEHICLE MAY BE UNABLE TO CONNECT TO ONSTAR USING THE WHITE, BLUE OR RED ONSTAR BUTTONS. |
| PIP5388 | 2016-11-03. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. THIS PRELIMINARY INFORMATION COMMUNICATES TO THE DEALER THE DETAILS OF THE 3.0 TWIN TURBO CHARGED ENGINE EXCHANGE PROGRAM. DEALER IS TO CALL GENERAL MOTORS PRODUCT QUALITY CENTER TO REQUEST AN EXCHANGE. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.