2021 GMC Yukon Technical Service Bulletins

1,240 technical service bulletins (TSBs) are on record for the 2021 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.

• 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).
• 10231492Jan 19, 2023Electrical system, Transmission and drivetrain. This technical bulletin provides a procedure to program the TCM and replace the control valve body if the conditions are found to be the cause of the failure of the valve body.
• 10231489Jan 19, 2023Visibility (wipers, defrost, mirrors), Engine cooling, Equipment. This technical bulletin provides service information to correct a customer concern of HVAC Heat Intermittently Inoperative, DTCs B2B05 and/or B2B06 Set.
• 10231486Jan 19, 2023Engine cooling, Fuel system. This technical bulletin provides a procedure to replace the fuel feed line if found the cause of the failure which set the DTC.
• 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.
• 10231415Jan 19, 2023Body and structure. This technical bulletin provides a step by step procedure to replace the pressure releif valve due to Flutter Noise from Right Rear Corner of the Vehicle.
• 10231404Jan 17, 2023Electrical system. This service bulletin provides a repair procedure to correct a customer concern of a No Fob detected message on Driver Information Center (DIC) and/or No Crank / No Start condition.
• 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.
• 10230613Jan 13, 2023Fuel system, Electrical system, Engine cooling. This technical bulletin provides a procedure to replace the fuel injector and the wiring harness to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated with DTC P0201, P0202, P0203, P0204, P0205, P0206 and/or P0216 Set.
• 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.
• 10230611Jan 11, 2023Engine cooling, Electrical system. This technical bulletin provides a procedure to locate a possible short in the engine wiring harness.
• 10230610Jan 10, 2023Transmission and drivetrain. This technical bulletin provides a procedure to replace the rear diff fluid to correct the rear clutches from chattering, which create a moan type noise.
• 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.
• 10230601Jan 6, 2023Electrical system, Transmission and drivetrain. This service bulletin provides information for the technician that may experience a condition when after performing a DTC Clear/Reset on the TCM during diagnosis or after completion of a transmission repair or replacement, the DTCs did not clear or appear to reset on the next engine start.
• 10230604Jan 4, 2023Wheels, Transmission and drivetrain. This technical bulletin provides a procedure to replace the front wheel drive shaft if found the cause of the custmers concern.
• 10230600Jan 3, 2023Equipment, Electrical system. This service bulletin provides information for dealers/technicians on MDI 2 Required When Programming Vehicles with Vehicle Intelligence Platform (VIP).
• 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.
• 10228909Dec 20, 2022Transmission and drivetrain. This informational bulletin advises the tech to check if the trans cooler lines are twisted which may cause the customers concern.
• 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.
• 10227798Dec 8, 2022Engine cooling, Electrical system. This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing.
• 10228192Dec 7, 2022Equipment. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
• 10228226Dec 6, 2022Brakes. This service bulletin provides information to dealership personnel that after performing a brake inspection, brake pad replacement, or any other repair that requires the caliper piston to be reseated may be causing DTC C05B0 to falsely set for eBoost applications.
• 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.
• 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.
• 10227380Nov 21, 2022Electrical system, Latches, locks and linkages. This service bulletin provides repair information to correct a customer concern of DTC B1038 SYM64 set in the BCM and Door Ajar Message on Driver Information Center (DIC).
• 10227288Nov 18, 2022Transmission and drivetrain. This informational bulletin advises the technician of a possibly noise coming from the transmission oil pump.
• 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.
• 10227265Nov 17, 2022Suspension, Electrical system. This technical bulletin provides a procedure to remove the conduit from the harness for the accelerometer to correct the condition of Message “Service Suspension System” Displayed and/or DTC C102Exx.
• 10227259Nov 15, 2022Engine cooling. This bulletin provides diagnostic information when checking the exhaust system for leaks.
• 10227275Nov 14, 2022Body and structure, Equipment. This technical bulletin provides repair information to correct a customer concern of the Rear Washer System Inoperative, or Boot to Washer Hose Disconnection and Possible Hose Leaking.
• 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.
• 10227054Nov 9, 2022Engine cooling. This bulletin advises the technician of a possible coolant hose that might be kinked causing the customers concern.
• 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).
• 10227041Nov 7, 2022Engine cooling, Fuel system. This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part.
• 10226118Nov 4, 2022Electrical system, Equipment. This service bulletin provides repair information on release of Radio Software Version V160 Update to correct customer concerns of radio software issues.
• 10226120Nov 3, 2022Suspension, Electrical system. This technical bulletin provides a procedure to remove the conduit from the harness for the accelerometer to correct the condition of Message “Service Suspension System” Displayed and/or DTC C102Exx.
• 10225749Oct 31, 2022Engine cooling. This informational bulletin advises the technician on normal noises produced by the engine and to explain this to the customer.
• 10225732Oct 28, 2022Brakes, Wheels. This bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customers concern of wheel clicking.
• 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.
• 10225711Oct 25, 2022Engine cooling, Electrical system. This service bulletin provides a procedure to repair a customer concern of Stop/Start System Inhibited / IBS / Battery Monitor with Module Malfunction Indicator Light (MIL) Illuminated - DTC U152D, P15FF, P305D, P305E, U01B0 Set.

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