2020 Cadillac CT5 Technical Service Bulletins

898 technical service bulletins (TSBs) are on record for the 2020 Cadillac CT5. 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.

• 10183782Oct 23, 2020Transmission and drivetrain, Electrical system, 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.
• 10183126Oct 23, 2020Engine. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
• 10182569Oct 23, 2020Electrical system. This Preliminary information communicates a concern that could cause U0512 to set in the Image Processing Control Module and engineering is working on a resolution.
• 10183229Oct 22, 2020Equipment, Electrical system, Engine. Service Update - Certain 2020 model year Cadillac CT5 vehicles had the incorrect torque applied to the starter nut. (6Nm instead of 12Nm). The nut may loosen over time due to insufficient clampload. This could cause intermittent start issues, a no start condition, or prolonged crank times. Arcing or sparking may also occur. Dealers will tighten the starter nut to 12 Nm and replace any parts that show arcing.
• 10183788Oct 21, 2020Equipment. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the malfunction indicator lamp (MIL) illuminated.
• 10183779Oct 21, 2020Fuel system. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
• 10182562Oct 21, 2020Engine cooling. This Preliminary information communicates the possibility of a flutter noise that can be transmitted through the engine mounts when the vehicle is operating in AFM mode.
• 10182560Oct 20, 2020Electrical system. This Preliminary information communicates a parts restriction is in place for the Central Gateway Module on 2020 Cadillac CT4, CT5, and Chevrolet Corvette.
• 10182554Oct 14, 2020Electrical system. This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
• 10182549Oct 12, 2020Equipment. This PI communicates a parts restriction is in effect on 2020 Cadillac CT4, CT5 and Chevrolet Corvette Amplifier.
• 10183780Oct 9, 2020Equipment. This warranty administration bulletin provides information on Warranty Administration - Customer Concern Not Duplicated (CCND) Labor Operation Numbers.
• 10182533Oct 5, 2020Body and structure. This Preliminary information communicates the possibility of dtc p2101 being stored in history and not to replace throttle body for this issue unless instructed to do so through published diagnostics.
• 10183218Oct 1, 2020Electrical system, Equipment. Customer Satisfaction Program - Certain 2020 model year Cadillac CT4, CT5, and Chevrolet Corvette vehicles, equipped with the Cadillac User Experience with embedded navigation or the Infotainment 3 premium system w/navigation (RPO IOT), may have a condition where the radio display is non-functional except for the backup camera. The embedded Multi-Media Controller (eMMC) firmware contains a defect that could cause a…
• 10181724Sep 30, 2020Equipment. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10181178Sep 30, 2020Engine cooling. This Preliminary information communicates the possibility of a engine oil leak that may occur at the cam carrier gasket T joint area due to improper amount of sealer be applied
• 10181675Sep 29, 2020Equipment, Body and structure. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only).
• 10181171Sep 28, 2020Equipment. The Preliminary Information communication advises the technician that the Product Quality Center has a part restriction for the E99 Engine Control Module. The dealer technician is advised to call the GM Product Quality Center for further assistance.
• 10181170Sep 28, 2020Electrical system, Brakes. This PI communicates a parts restriction is in effect on 2020 Cadillac CT4, CT5 and Chevrolet Corvette Electronic Brake Boost Control Module and Valve Kit, Brake Pressure Modulator.
• 10181657Sep 22, 2020Steering. Service update - certain vehicles may require individual software updates to multiple modules to address various minor issues such as steering feel and data communication. Dealers are to reprogram multiple modules.
• 10181155Sep 21, 2020Equipment. This PI communicates a parts restriction is in effect on 2020 Cadillac CT4, CT5 and Chevrolet Corvette Amplifier.
• 10181154Sep 21, 2020Electrical system. This Preliminary information communicates a parts restriction is in place for the Short Range Radar Module on 2020 Cadillac CT4, and CT5.
• 10181152Sep 21, 2020Electrical system. This Preliminary information communicates a parts restriction is in place for the Image Processing Module on 2020 Cadillac CT4, and CT5.
• 10181716Sep 17, 2020Engine cooling, Electrical system. This technical bulletin provides repair information to correct a customer concern of Auto Start/Stop Disabled with Malfunction Indicator Lamp (MIL) Illuminated and DTC U0599 set.
• 10181695Sep 17, 2020Equipment, Electrical system. This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF.
• 10181652Sep 17, 2020Forward collision avoidance. Service Update Bulletin - Certain 2020 model year Cadillac CT4 and CT5 vehicles may have a condition where the front windshield camera module may reset and lose communication with other modules. DTCs P25A2, U0265, U0566 and U1962 are set. The malfunction indicator light (MIL) may illuminate. Reprogram the front view camera.
• 10181146Sep 17, 2020Steering, Electrical system. This Preliminary information communicates An issue may occur causing a Service Driver Assist, Steering Assist Reduced Messages, or MIL illuminated with P25A2, U0265, and U0566, replacing the Front View Camera for frequently occurring cases and a software/hardware solution will be forthcoming for infrequently occurring cases.
• 10181145Sep 17, 2020Forward collision avoidance. This PI communicates a parts restriction is in effect on 2020 cadillac CT4, and CT5 Front View Camera Module.
• 10181705Sep 9, 2020Steering, Electrical system. This technical bulletin provides repair information to correct a customer concern of Service Driver Assist and/or Take Steering Messages on Start-up, Advanced Driver Assist Systems (ADAS) Features Not Available.
• 10181670Sep 2, 2020Engine cooling. This Bulletin provides inspection/diagnosis/correction information on a cold start misfire and/or rough idle and DTC P0300 that may also be set.
• 10181660Sep 2, 2020Transmission and drivetrain. This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
• 10179662Aug 31, 2020Equipment, Transmission and drivetrain. This Preliminary information communicates a parts restriction is in place for the Automatic Transmission Control on 2020 Cadillac CT4, and CT5.
• 10179658Aug 27, 2020Engine. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 10180697Aug 14, 2020Equipment. This Warranty Administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information.
• 10180317Aug 14, 2020Tires. This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).
• 10180315Aug 12, 2020Electrical system. This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF.
• 10213746Aug 10, 2020Brakes, Equipment. Service Update. Certain vehicles may experience a noise from the left front and right rear brake wear sensors during low speed or when the brake is applied lightly. Dealers are to remove pad wear sensors and install a left front and right rear plug.
• 10179625Aug 6, 2020Engine, Equipment. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 10180299Aug 5, 2020Equipment. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
• 10179623Aug 5, 2020Electrical system, Equipment. This Preliminary Information communication advises the technician that the Radio or Tuner, radio controls, Integrated Center Stack, HUD's, IPC's, and radio displays are placed on restriction through the General Motors Technical Assistance Center. Dealers will need to contact General Motors Technical Assistance Center for further assistance.
• 10179538Jul 30, 2020Electrical system. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the malfunction indicator lamp (MIL) illuminated.
• 10179537Jul 30, 2020Electrical system. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineers listed in regards to no fob detected message on driver information center (DIC), passive and backup inoperative and active functions working for all transmitters.
• 10178392Jul 29, 2020Lane departure, Electrical system. This PI communicates a parts restriction is in effect on 2020 Cadillac CT4, and CT5 Side Blind Zone Module.
• 10178949Jul 28, 2020Transmission and drivetrain, Engine. This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.
• 10178383Jul 24, 2020Back-over prevention (rear camera). This PI communicates a parts restriction is in effect on 2020 cadillac CT4, and CT5 Front View Camera Module.
• 10178377Jul 22, 2020Equipment, Brakes. This Preliminary information communicates that there maybe a squeak or squeal noise caused by contact between the brake pad wear sensor and the rotor.
• 10178961Jul 14, 2020Equipment. This informational bulletin provides information for dealers/technicians on No MIL illuminated, ignore these DTCs if set in History.
• 10178371Jul 13, 2020Forward collision avoidance, Electrical system. This PI communicates a parts restriction is in effect on 2020 cadillac CT4, and CT5 Front View Camera Module.
• 10179408Jul 10, 2020Body and structure, Equipment. This bulletin provides information to dealers regarding transportation damage repair claim submission requirements.
• 10178399Jul 7, 2020Electrical system. Service Update - Certain vehicles may require individual software updates to multiple modules to address variousminor issues such as steering feel and data communication. Dealers are to reprogram multiple modules.
• 10178361Jul 2, 2020Electrical system, Engine cooling. 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.

← All problems reported for the 2020 Cadillac CT5