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.
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Only bulletins with component: Engine are shown. Show all
| PIC6137B | 2017-08-15. Service bulletin. ENGINE. 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 2.5 hours. 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 2.5 hours. If the fob is located, the timer will reset an additional 2.5 hours. |
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| 09-06-04-026L | 2017-08-15. Service bulletin. ENGINE. This informational bulletin provides information on Identifying Non-GM (Aftermarket) Engine Calibrations for Gasoline Engines Using Tech 2® or GDS 2 (U.S. and Canada) |
| 06-06-01-010C | 2017-08-15. Service bulletin. ENGINE. This informational bulletin provides information on close coupled converters and there affect on newly installed engines or engines during there break in period. |
| 16-NA-222 | 2017-05-25. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETIN PROVIDES THE TECHNICIAN WITH WHAT MAY HAPPEN TO AN ENGINE DUE TO LACK OF MAINTENANCE. |
| PIP5388A | 2017-05-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE 3.0L TWIN TURBO CHARGED ENGINE HAS BEEN PLACED ON THE ENGINE EXCHANGE PROGRAM. DEALER WILL NEED TO CALL GENERAL MOTORS PRODUCT QUALITY CENTER FOR FURTHER ASSISTANCE. |
| 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. |
| 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. |
| 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. |
| PIP5189B | 2016-11-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR THE CONCERN OF BLACK SMOKE WHEN STARTING THE VEHICLE AFTER SITTING. |
| PIP4786C | 2016-10-20. Service bulletin. ENGINE AND ENGINE COOLING. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE LOW OIL PRESSURE MESSAGE. TECHNICIAN MAY ALSO FIND A DIAGNOSTIC TROUBLE CODE P0521 IN THE ENGINE CONTROL MODULE. TECHNICIAN SHOULD FOLLOW ALL PUBLISHED SERVICE INFORMATION DIAGNOSIS. WHEN USING A SCAN TOOL IF THE OIL PRESSURE IS LOW BUT THE OIL PRESSURE AT THE OIL FILTER HOUSING IS CORRECT, TECHNICIAN SHOULD INSPECT THE VALVE LIFTER OIL FILTER FOR DEBRIS/SLUDGE THAT COULD BE RESTRICTING OIL FLOW TO THE OIL PRESSURE SENSOR. TECHNICIAN SHOULD REMOVE THE VALVE LIFTER OIL FILTER AND CLEAN IT. IF THE VALVE LIFTER OIL FILTER CANNOT BE CLEANED REPLACE IT. |
| PIE0374 | 2016-10-19. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE; ELECTRICAL SYSTEM. THIS ENGINEERING INFORMATIONAL BULLETIN IS REQUESTING INFORMATION FROM THE FIELD ON VEHICLES THAT HAVE THE CONDITION OF A NO CRANK NO START DUE TO A DISCHARGED BATTERY. |
| PI1394A | 2016-10-19. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETIN PROVIDES ADDITIONAL INFORMATION ON HOW TO INSTALL PISTONS AND SUGGEST WHAT TOOLS TO USE. |
| 030604017I | 2016-10-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. THIS INFORMATIONAL BULLETIN EXPLAINS THE USE OF DIESEL FUEL ADDITIVES IN AN ENGINE, ARE NOT REQUIRED UNLESS THE CUSTOMER DESIRES ADDITIVES TO PREVENT FUEL CONCERNS DEPENDING ON FUEL OR TEMPERATURE RELATED CONDITIONS. |
| 030603004R | 2016-10-18. Service bulletin. ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION ON HOW TO TEST A BATTERY AND WHAT IS NEEDED TO WARRANTY A BATTERY. |
| 000601026I | 2016-10-18. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETINS PROVIDES INFORMATION ON THE INTAKE MANIFOLD INSPECTION/REPLACEMENT AFTER SERVERE INTERNAL ENGINE DAMAGE. |
| 000601012F | 2016-10-18. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION TO GM DEALERS ON THE CORRECT CLEANING METHODS WHEN CLEANING ENGINE GASKET SEALING SURFACES. |
| 16NA249 | 2016-10-14. Service bulletin. ENGINE AND ENGINE COOLING. THIS INFORMATIONAL BULLETIN EXPLAINS A POSSIBLE NORMAL WHINING NOISE FROM THE BALANCE SHAFT CHAIN IF THE VEHICLE HAS LESS THAN 10,000 MILES ON IT. |
| 16-NA-186 | 2016-10-11. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPLACE THE GENERATOR AND FAN BELT FOR A NOISE CONCERN DUE TO THE BELT BEING MADE TO LONG. |
| 16-NA-141 | 2016-10-03. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO ALIGN THE EXHAUST SYSTEM TO CORRECT A CUSTOMER CONCERN THAT A NOISE IS HEARD INSIDE THE VEHICLE WHILE ACCELERATING DURING A RIGHT HAND TURN CAUSED BY THE EXHAUST PIPE AND/OR PIPE HEAT SHIELD CONTACTING THE UNDERBODY HEAT SHIELD. |
| PIP-5403 | 2016-08-26. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT VEHICLES EQUIPPED WITH AN 3.0L TWIN TURBO CHARGED ENGINE AS PART OF OUR ONGOING QUALITY IMPROVEMENT EFFORTS THE ENGINE IS BEING PLACED ON RESTRICTION. DEALER WILL NEED TO CALL PRODUCT QUALITY CENTER FOR ASSISTANCE. |
| PIP-5306-C | 2016-08-25. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT VEHICLES EQUIPPED WITH AN 3.6L ENGINE REGULAR PRODUCTION OPTION CODE LGX AS PART OF OUR ONGOING QUALITY IMPROVEMENT EFFORTS THE ENGINE IS BEING PLACED ON RESTRICTION. DEALER WILL NEED TO CALL PRODUCT QUALITY CENTER FOR ASSISTANCE. |
| PIP-5402 | 2016-08-25. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES THE TECHNICIAN WITH THE DIAGNOSIS AND REPAIR STEPS FOR A VEHICLE WITH A CHECK ENGINE LIGHT ON WITH DIAGNOSTIC TROUBLE CODE P015B OR A REDUCED ENGINE POWER MESSAGE WITH DIAGNOSTIC TROUBLE CODE P1101. TECHNICIAN SHOULD LOOK FOR A MISSING OR DAMAGED O-RING SEAL IN THE CHARGE AIR COOLER COUPLER. |
| PIP-5313-B | 2016-08-25. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE E80 ENGINE CONTROL MODULE PART NUMBERS 12669908 OR 12672502 HAVE BEEN PLACED ON PART RESTRICTION BY GENERAL MOTORS TECHNICAL ASSISTANCE. DEALER WILL NEED TO CALL GENERAL MOTORS TECHNICAL ASSISTANCE CENTER FOR FURTHER ASSISTANCE. |
| PIP-5306-B | 2016-08-16. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE PRODUCT QUALITY CENTER HAS A PART RESTRICTION FOR THE E82 ENGINE CONTROL MODULE. THE TECHNICIAN IS ADVISED TO CALL THE GM PRODUCT QUALITY CENTER FOR FURTHER ASSISTANCE. |
| PIP-5306-A | 2016-08-13. Service bulletin. EQUIPMENT; ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE PRODUCT QUALITY CENTER HAS A PART RESTRICTION FOR E82 ENGINE CONTROL MODULE. THE TECHNICIAN WILL NEED TO CALL THE 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.