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Service bulletins for the 2020 Cadillac CT5

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.

898 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
990851001E2020-12-21. Service bulletin. EQUIPMENT; STRUCTURE. Thins informational bulletin provides information on Paint-less Dent Repair Process.
000310002L2020-12-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; WHEELS. This service bulletin provides information on Chemical Staining, Pitting, Corrosion and/or Spotted Appearance of Chromed Aluminum Wheels.
20NA1232020-12-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides repair information to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated with DTCs U1961, U1983 setting.
18NA2632020-12-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provide policy information for variable diagnostic time allowances on select labor operations (U.S. Only).
PIT5782A2020-12-14. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This Preliminary information communicates and issue with programming a replacement side object detection module and engineering is working on the issue.
PIC6395C2020-12-14. Service bulletin. EQUIPMENT; POWER TRAIN. This Preliminary information communicates a parts restriction is in place for the Automatic Transmission Control on 2020 Cadillac CT4, and CT5.
PIP57632020-12-14. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates that a software anomaly can cause C1135 SYM92 to set prematurely causing a Service Axle message. A software update will be released to correct this concern.
PIC6386C2020-12-14. Service bulletin. STEERING; EQUIPMENT. This Preliminary information communicates a parts restriction is in place for the Power Steering Gear on 2020 Cadillac CT4 and CT5.
PIE0579A2020-12-07. Service bulletin. EQUIPMENT. 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.
1308116001F2020-12-07. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION. 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.
060089026Q2020-12-07. Service bulletin. EQUIPMENT. This warranty administration bulletin provides information on Warranty Administration - Customer Concern Not Duplicated (CCND) Labor Operation Numbers.
N2023161502020-11-30. Service bulletin. ENGINE; ELECTRICAL SYSTEM; EQUIPMENT. 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.
N2023083202020-11-30. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. 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 continuous rebooting condition. Rebooting will continue even after shutdown, resulting in a battery drain for the affected vehicle, and possibly a dead battery and a no-start condition. Dealers will replace the radio receiver.
20NA2132020-11-30. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE AND ENGINE COOLING. This service bulletin provides information on Improved Oil Filter Gasket Design for Spin-On Oil Filters PF63, PF64 and PF48.
PIC6407D2020-11-16. Service bulletin. EQUIPMENT. This PI communicates a parts restriction is in effect on 2020 Cadillac CT4, CT5 and Chevrolet Corvette Amplifier.
110089005P2020-10-26. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
20NA1572020-10-26. Service bulletin. EQUIPMENT; 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.
18NA3062020-10-26. Service bulletin. EQUIPMENT; STRUCTURE:BODY. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only).
PIP5693C2020-10-19. Service bulletin. EQUIPMENT. 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.
PIC6407C2020-10-19. Service bulletin. EQUIPMENT:ELECTRICAL. This PI communicates a parts restriction is in effect on 2020 Cadillac CT4, CT5 and Chevrolet Corvette Amplifier.
990089019U2020-10-05. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information.
18NA0992020-09-28. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
PIC6395B2020-09-14. Service bulletin. EQUIPMENT; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY. This Preliminary information communicates a parts restriction is in place for the Automatic Transmission Control on 2020 Cadillac CT4, and CT5.
PIP5733B2020-09-14. Service bulletin. EQUIPMENT; ENGINE. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
PIT5411U2020-09-14. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. 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.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.