2017 Cadillac CT6 Plug-In Hybrid Technical Service Bulletins

663 technical service bulletins (TSBs) are on record for the 2017 Cadillac CT6 Plug-In Hybrid. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10154604Dec 17, 2018Engine cooling. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency…
• 10154975Dec 14, 2018Transmission and drivetrain, Equipment. This warranty administration bulletin provide policy information for automatic transmission Oil Cooler Flush and flow test.
• 10155014Dec 13, 2018Equipment. This informational bulletin provides information for dealers/technicians on Use of Dealer Case Management (DCM) and Being Prepared for Contacting U.S. Technical Assistance (TAC).
• 10155009Dec 13, 2018Exterior lighting. This informational bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Replacement Guidelines.
• 10154976Dec 13, 2018Latches, locks and linkages. This informational bulletin provides information and operating tips for the hands free lift gate.
• 10154585Dec 13, 2018Electrical system. The Preliminary Information communication advises the technician that the Technical Assistance Center has a Parts Restriction for Drive Motor Battery. The dealer technician is advised to call the GM Technical Assistance Center for further assistance.
• 10154981Dec 11, 2018Electrical system. This technical bulletin provides a procedure to replace the GEN I charging system with a GEN II charging system only if vehicles apply within the settings.
• 10154580Dec 11, 2018Engine cooling. This Preliminary information communicates a possible noise from the water pump causing a DTC and the diagnostics for the repair.
• 10154974Dec 7, 2018Equipment, Brakes. This technical bulletin provides a procedure for replacing the oil pump, power brake booster and power brake booster vacuum hose to eliminate a hard brake pedal and/or air type noise heard upon brake apply due to oil in the brake booster.
• 10154566Dec 6, 2018Engine cooling. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
• 10155012Dec 5, 2018Equipment, Seats. This informational bulletin provides information for information on passenger presence sensing system (PPS or PSS) concerns with custom upholstery, accessory seat heaters or other comfort enhancing devices.
• 10155011Dec 5, 2018Electrical system. This bulletin explains the labor operation numbers used for submitting warranty claims for module reprogramming and not when replacing a module.
• 10155008Dec 5, 2018Tires. 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.
• 10154552Dec 3, 2018Engine cooling. This preliminary information document communicates a tip on the way to diagnose possible induction or exhaust air leaks using the evaporative emission cart smoke machine and ultrasonic leak detector tools.
• 10151869Nov 21, 2018Equipment. This Preliminary Information communication provides information to the technician about what XM offerings are available for vehicles. A dealer or customer can access the website listed below for vehicle specific XM offerings and availability.
• 10151861Nov 19, 2018Lane departure, Seats. This Preliminary Information communicates to 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…
• 10151851Nov 15, 2018Lane departure, Vehicle speed control. This Preliminary information communicates that a vehicle may exhibit a Adaptive Cruise Control Unavailable and/or Lane Keep Assist Unavailable message. The technician may attempt to program the Active Safety Control Module (ASCM) and encounter a code E4399. The technician is advised if he encounters this concern to zero the MIC counter by placing the vehicle into and back out of "Transport Mode".
• 10151836Nov 13, 2018Engine. This Preliminary information communicates there is an investigation into cause and correction for this group of DTC's setting together. (P0011, P0014, P0021, P0024). Revised to include the possibility of setting in pairs and some drivability concerns.
• 10151834Nov 13, 2018Equipment, Electrical system. This Preliminary information communicates a possible P1FFE for a stuck sensor after Repair. This explains that air pocket could cause the sensor to get stuck. It explains the process for resting the sensor float.
• 10155075Nov 8, 2018Engine cooling. This preliminary informational bulletin provides repair information for a customer concern of an engine runs rough with the Check Engine Light (CEL) on/low compression on cylinder with misfire. A technician may find DTC P0300 set.
• 10155101Nov 5, 2018Equipment. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formally known as a Product Allegation Resolution (PAR) claim.
• 10147401Oct 23, 2018Equipment. This Preliminary information communicates
• 10147399Oct 23, 2018Electrical system. This Preliminary Information communication provides information to the technician about vehicles EV range is less than expected, or the estimated EV range on the display is greater than the actual range achieved. Dealer should walk the customer though using the energy screen. The energy screen will help the customer understand were there battery energy is being used.
• 10147371Oct 12, 2018Electrical system, Hybrid propulsion system. The Preliminary Information communication advises the technician that the Technical Assistance Center has a Parts Restriction for Hybrid Powertrain Control Module 2 for the new vehicle launch of the 2017 Cadillac CT6 Plug In Hybrid. The dealer technician is advised to call the GM Technical Assistance Center for further assistance.
• 10147370Oct 12, 2018Electrical system. The Preliminary Information communication advises the technician that the Technical Assistance Center has aParts Restriction for the Accessory Power Module for the new vehicle launch of the 2017 Cadillac CT6 Plug In Hybrid.The dealer technician is advised to call the GM Technical Assistance Center for further assistance.
• 10147367Oct 10, 2018Equipment. This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
• 10147366Oct 10, 2018Seats. This Preliminary Information communication provides information to the technician with diagnostic tips for auto heated and ventilated seat operation. The auto thermal seats function activates seat heating or ventilation based on outside air temperature and the cabin air temperature control error. The cabin air temperature control error is the difference between cabin air target temperature and actual cabin air…
• 10147365Oct 9, 2018Engine. This Preliminary information communicates possible concerns and a diagnostic strategy to locate and repair various noises within the engine as well as some misfire causes.
• 10147364Oct 9, 2018Engine. This Preliminary information communicates additional diagnostics to assist the dealer technician with diagnosing and repairing trouble code P2097.
• 10147363Oct 9, 2018Engine, Equipment. This Preliminary information communicates to the technician where to find the engine identification tag and what information on that tag to use during programming of someengine control modules.
• 10147348Oct 3, 2018Fuel system. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.
• 10147331Sep 18, 2018Transmission and drivetrain. 18199 - Service Update - Software that controls the electric motor for the auxiliary transmission fluid pump has a fault in the logic used for restarting the pump. During a pump restart attempt, motor current over threshold can occur resulting in DTC P0C28 (Auxiliary Transmission Fluid Pump High Current). Additionally, DTC P0B07 (Auxiliary Transmission Fluid Pump Motor Phase W Low Current) was incorrectly…
• 10145490Sep 18, 2018Engine. 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…
• 10145473Sep 11, 2018Electrical system. The Preliminary Information communication advises the technician that the Technical Assistance Center has a Parts Restriction for Drive Motor Battery.The dealer technician is advised to call the GM Technical Assistance Center for further assistance.
• 10145463Sep 5, 2018Equipment. This Preliminary information communicates a possible noise from the water pump causing a DTC and the diagnostics for the repair.
• 10144476Aug 28, 2018Equipment. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
• 10144456Aug 14, 2018Engine. This Preliminary information communicates possible concerns and a diagnostic strategy to locate and repair various noises within the engine as well as some misfire causes.
• 10144455Aug 9, 2018Engine. This Preliminary information communicates diagnostic tips for misfires on active fuel management cylinders and engineering investigations into cylinder 6 misfire on XT5 and cylinder 4 misfire on LaCrosse both of which are 2017. Changes to Preliminary informationinclude adding MY2018, advising of calibration for previous investigation and adding pictures to identify concern. Also defining calibration update…
• 10144454Aug 9, 2018Engine cooling, Electrical system. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon and may also have an oil or coolant leak. Technician may find coolant or oil in a spark plug tube. If the Spark Plug Tube is leaking and it is determined that the oil or coolant is not coming from a leak above the spark plug then replace the cylinder Head, spark plug and coil.
• 10144451Aug 8, 2018Engine. This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure.
• 10143781Jul 26, 2018Equipment. This Preliminary information communicates there is an investigation into cause and correction for this group of DTC's setting together. (P0011, P0014, P0021, P0024).
• 10143779Jul 25, 2018Engine cooling. 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.
• 10143772Jul 23, 2018Engine. This Preliminary information communicates a possible concern of machining debris in the oil filter from original build manufacturing.
• 10143758Jul 9, 2018Equipment. This Preliminary Information communication provides information to the technician on how to tell the difference between the integrated center stack, the radio, the human machine interface, and the vehicle communication interface module. There are pictures of all the individual modules for identification purposes.
• 10143756Jul 6, 2018Lane departure. This Preliminary Information communication provides information to the technician about vehicles thatmay have Service Front Camera, Service Lane Departure Warning, and Service Lane Keep Assist Message. Technician may find Diagnostic Trouble Code B1008 Sym 4B set. Technician will need to check the windshield to ensure it is not aftermarket. Technician will also check for anything that may impair the front view…
• 10143752Jul 3, 2018Visibility (wipers, defrost, mirrors). This Preliminary Information communication advises the technician the steps on diagnosing the concern. Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks.
• 10143453Jun 26, 2018Engine. This Preliminary information communicates there is an investigation into cause and correction for this group of DTC's setting together. (P0011, P0014, P0021, P0024).
• 10143449Jun 20, 2018Equipment. This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
• 10143443Jun 14, 2018Equipment. This Preliminary Information communication provides information to the technician about vehicles that may have an issue when using Bluetooth voice recognition with an iPhone. Technician should work with the customer to insure the phone contacts to not have any Emojis loaded to any contact.
• 10143435Jun 12, 2018Transmission and drivetrain. This Preliminary information communicates Parts Restriction for Transmission components for the new vehicle launch of the 2017 CT6 Hybrid.

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