2020 GMC Yukon Technical Service Bulletins

775 technical service bulletins (TSBs) are on record for the 2020 GMC Yukon. 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.

• 10231893Feb 1, 2023Engine cooling, Electrical system. This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention.
• 10231519Jan 31, 2023Tires, Wheels, Equipment. This service bulletin provides information for tire pressure monitoring (TPM) system concerns.
• 10231518Jan 31, 2023Equipment, Tires, Wheels. This service bulletin provides information for accurate tire pressures that ensure the safe handling and appropriate ride characteristics of GM cars and trucks.
• 10231365Jan 20, 2023Engine cooling. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine.
• 10231364Jan 20, 2023Latches, locks and linkages. This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
• 10231302Jan 20, 2023Equipment. This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only).
• 10231427Jan 19, 2023Electrical system, Transmission and drivetrain. This informational bulletin advises the tech to inspect the transfer case motor electrical connectors for possible damage or corrosion that might be caused by a damage grommet inside the electrical connector.
• 10231374Jan 17, 2023Equipment. This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2017-2022 and newer model year vehicles with RPO ATH and AVJ.
• 10230612Jan 13, 2023Electrical system. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
• 10230608Jan 12, 2023Transmission and drivetrain. This Technical bulletin provides a repair to correct a condition of Shudder/Surging While Driving.
• 10230603Jan 6, 2023Engine cooling, Electrical system. This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention.
• 10230583Jan 6, 2023Engine cooling. This service bulletin provides a procedure to repair the valve lifter oil manifold and/or lifters to correct the customers concern of engine misfire, ticking noise and/or MIL Illuminated.
• 10228912Dec 23, 2022Wheels. This service bulletin provides information on Dealer Installed LPO Wheel Installation and Return Process.
• 10228907Dec 21, 2022Transmission and drivetrain. This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto Mode.
• 10228906Dec 21, 2022Equipment. This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.
• 10230697Dec 15, 2022Visibility (wipers, defrost, mirrors). 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.
• 10228888Dec 14, 2022Engine cooling. This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
• 10228886Dec 14, 2022Engine cooling. 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.
• 10228863Dec 13, 2022Engine cooling, Transmission and drivetrain. This Warranty Admin service 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.
• 10228192Dec 7, 2022Equipment. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
• 10230683Dec 5, 2022Equipment, Electrical system. 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.
• 10230682Dec 2, 2022Equipment, Electrical system. 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.
• 10227401Nov 30, 2022Equipment, Electrical system. This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative.
• 10227398Nov 30, 2022Transmission and drivetrain. This Technical bulletin provides a repair to correct a condition of Shudder/Surging While Driving.
• 10227674Nov 29, 2022Wheels, Tires. 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.
• 10227261Nov 18, 2022Engine cooling. This bulletin advises the technician to Inspect the position of the head gasket locating tabs to determine if the head gasket(s) has been possibly installed backwards to correct a concern of an Engine Thermostat Tick Noise and/or Running Hot.
• 10227241Nov 18, 2022Transmission and drivetrain, Engine cooling. 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.
• 10227229Nov 18, 2022Transmission and drivetrain. This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto Mode.
• 10227058Nov 9, 2022Transmission and drivetrain. This information advises the technician the difference between a welch cap leak and the output seal of the t-case or transmission leaking ATF causing the customers concern.
• 10227056Nov 9, 2022Engine cooling. This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
• 10227052Nov 7, 2022Body and structure. This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only).
• 10225749Oct 31, 2022Engine cooling. This informational bulletin advises the technician on normal noises produced by the engine and to explain this to the customer.
• 10225719Oct 26, 2022Engine cooling. This bulletin advises the technician to Inspect the position of the head gasket locating tabs to determine if the head gasket(s) has been possibly installed backwards to correct a concern of an Engine Thermostat Tick Noise and/or Running Hot.
• 10225615Oct 19, 2022Electrical system. This service bulletin provides information on Module Harvesting.
• 10224820Oct 7, 2022Equipment. This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).
• 10224831Oct 4, 2022Body and structure. This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.
• 10224309Sep 30, 2022Other or unknown. This Preliminary Information communication provides information to the technician that General Motors and General Motors of Canada Company do not support cross border sales. The General Motors of Canada Customer Care Centre is the sole authorized provider of a certification confirmation letter which helps our customers identify if their vehicles meets the required USA regulatory standards necessary for importation…
• 10224304Sep 28, 2022Other or unknown. This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.
• 10222839Sep 28, 2022Equipment. This service bulletin provides information on Handling Requests for Modifications to Permanently Import/Export Vehicles Between the U.S. and Canada.
• 10222832Sep 28, 2022Transmission and drivetrain. This informational bulletin explains how the trans slip or flare can be a normal condition.
• 10222841Sep 27, 2022Electrical system. This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).
• 10222827Sep 26, 2022Body and structure, Electrical system. This informational bulletin provides information for dealers/technicians on Aero Shutter Related Diagnostic Codes.
• 10222777Sep 16, 2022Transmission and drivetrain, Brakes, Engine cooling, Suspension, Steering. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
• 10222776Sep 16, 2022Electrical system. The intent of this service 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.
• 10222771Sep 16, 2022Engine cooling. This service bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
• 10222770Sep 16, 2022Transmission and drivetrain, Engine cooling. This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
• 10222766Sep 16, 2022Engine cooling, Fuel 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.
• 10224285Sep 14, 2022Transmission and drivetrain. 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.
• 10222796Sep 14, 2022Engine cooling. This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
• 10222772Sep 14, 2022Engine cooling. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.

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