2020 Cadillac XT4 Technical Service Bulletins

757 technical service bulletins (TSBs) are on record for the 2020 Cadillac XT4. 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.

• 11008986Oct 18, 2024Electrical system. This Preliminary information communicates direction and examples when diagnosing multiple DTCs, one of which includes U**** Byte 71 DTC.
• 11010901Oct 17, 2024Electrical system. This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to measure the load on the system that may be causing a drain.
• 11011444Oct 16, 2024Other or unknown. This Preliminary information communicates to the dealer a process for accessing the procedure to add attachments to a GM technical assistance case using the dealer case management tool.
• 11010576Oct 11, 2024Other or unknown. This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center (WPC) must be shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC.
• 11010545Oct 9, 2024Other or unknown. This service bulletin provides information on key code security rules and information on GM keycode look-up applications (U.S).
• 11010493Oct 5, 2024Body and structure, Other or unknown. This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
• 11010490Oct 5, 2024Engine. This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
• 11011420Oct 4, 2024Other or unknown. This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC.
• 11010488Oct 3, 2024Other or unknown. This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.
• 11010421Oct 3, 2024Electrical system. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
• 11010495Oct 2, 2024Other or unknown. This bulletin provides information on Warranty Administration – Required Operating Procedures - 8 Points (U.S. Only).
• 11010491Oct 2, 2024Other or unknown. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
• 11011406Oct 1, 2024Forward collision avoidance. This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
• 11009519Oct 1, 2024Body and structure. This technical bulletin provides a procedure to correct the condition of Excessive Waviness, Wrinkling or Sag in the Sunroof Sunshade.
• 11009532Sep 27, 2024Engine. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
• 11009531Sep 27, 2024Engine. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
• 11009764Sep 21, 2024Body and structure, Other or unknown. This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
• 11009760Sep 21, 2024Electrical system. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
• 11009453Sep 18, 2024Engine. This engineering information (EI Lite) closure ends the need for technicians to submit pictures using the FPR App process in regard to coolant leaking around the Coolant Control Valve (CCV).
• 11009756Sep 17, 2024Engine, Transmission and drivetrain. This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
• 11009088Sep 16, 2024Transmission and drivetrain. This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
• 11009039Sep 14, 2024Other or unknown. This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
• 11007744Sep 12, 2024Other or unknown. 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.
• 11007743Sep 12, 2024Other or unknown. 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.
• 11009037Sep 10, 2024Other or unknown. This service bulletin provides information on Enhancing Field Product Reports with Digital Pictures.
• 11008956Sep 9, 2024Other or unknown. This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).
• 11007208Sep 6, 2024Other or unknown. This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
• 11007196Sep 6, 2024Other or unknown, Electrical system. 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…
• 11008898Aug 27, 2024Other or unknown. The bulletin provides direction on how to locate the Temporary Service Part (TSP) form in GlobalConnect.
• 11006621Aug 26, 2024Electrical system. Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined…
• 11007936Aug 22, 2024Suspension. This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
• 11007935Aug 22, 2024Suspension. This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
• 11008906Aug 19, 2024Engine. This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
• 11007721Aug 16, 2024Electrical system, Engine. This service bulletin provides information on AGM batteries that require less frequent charging in storage.
• 11006317Aug 13, 2024Seats. This Preliminary information communicates assistance in locating the Rear seat belt comfort guides in the parts catalog.
• 11006293Aug 13, 2024Electrical system. This Preliminary information communicates to the dealer an issue where the vehicle's engine may crank over unprompted and not start afterward. This is the result of hooking up the Active Fuel Injector Tool incorrectly on vehicles equipped with a direct fuel injection system. This Preliminary information instructs the dealer of a repair kit they received that will prevent this issue when installed correctly.
• 11006285Aug 13, 2024Engine. This Preliminary information communicates to the technician a service Diagnostic / Repair tip to avoid causing the crankshaft sprocket to disengage from the crankshaft during crankshaft balancer or cam drive system component related service procedures.
• 11007718Aug 12, 2024Engine. This service bulletin explains how to identify possible DEF system contamination.
• 11006682Aug 9, 2024Other or unknown. This service bulletin provides information on a guide to help reduce repeat visits for the same customer concern.
• 11007155Aug 8, 2024Engine. This informational bulletin advises the technician that the engine and related parts will be debited if found that the tech did not properly prepare the engine block from dirt and debris in bolt holes or if found that the block was damaged by the tech.
• 11007115Aug 8, 2024Engine. This service bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
• 11007121Aug 7, 2024Engine. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
• 11007095Aug 7, 2024Fuel 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.
• 11006670Aug 7, 2024Engine. This service bulletin advises about the possible issues that may occur when using a scotch brite pad or highly abrasive disk on gasket sealing surfaces or reused parts.
• 11007116Aug 6, 2024Engine, Electrical system. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
• 11007091Aug 5, 2024Engine. This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
• 11006644Aug 1, 2024Other or unknown. This Warranty Administration service bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
• 11006511Jul 31, 2024Visibility (wipers, defrost, mirrors). This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic.
• 11006470Jul 31, 2024Engine. This informational bulletin explains why more DEF is being used in diesel engines due to new emission standards.
• 11006371Jul 26, 2024Other or unknown, Electrical system. This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.

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