2021 GMC Yukon XL Technical Service Bulletins

1,234 technical service bulletins (TSBs) are on record for the 2021 GMC Yukon XL. 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.

• 10183200Oct 5, 2020Body and structure. This technical bulletin provides repair information to correct a customer concern of Liftgate Unwanted Opening Due to Hands-Free Calibration Sensitivity.
• 10182536Oct 5, 2020Seats. This Preliminary information communicates an issue with the 3rd Row Seat Headrest not returning to the upright position after cycling the seat and to install a headrest repair kit.
• 10181724Sep 30, 2020Equipment. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10181182Sep 30, 2020Seats. This Preliminary information communicates an issue with the SIR MIL turning on and DTC B14DC setting caused by high resistance at the F106DA Driver's front seat inboard air bag connector. Dealers are to replace the F106DA Driver's front seat inboard air bag connector pigtail.
• 10181179Sep 30, 2020Electrical system, Back-over prevention (rear camera). This Preliminary information communicates and issue with programming a replacement side object detection module and engineering is working on the issue.
• 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).
• 10181176Sep 29, 2020Transmission and drivetrain. This Preliminary information communicates an issue with the 110 volt power outlets not resetting if overloaded and causing the customer to take the vehicle to the dealership to have it reset. Engineering is working on a new cal.
• 10181175Sep 29, 2020Transmission and drivetrain. This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues with modules Engineering is working on a fix
• 10181164Sep 24, 2020Engine cooling. This Preliminary information communicates and issue if the BSCM is replaced it may prevent any over the air updates to the vehicle and in the meantime to prevent this the dealership needs to replace the complete master cylinder assembly.
• 10181150Sep 18, 2020Electrical system, Body and structure. This Preliminary information communicates an issue with the power liftgate inoperative and engineering working on the issue.
• 10181714Sep 17, 2020Transmission and drivetrain, Electrical system. This technical bulletin provides repair information to correct a customer concern of Transmission Control Module Offline Event.
• 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.
• 10181142Sep 17, 2020Transmission and drivetrain. This Preliminary information communicates an issue with the Transmission Control Module (TCM) not communicating and causing a no crank concern. Dealers are to reprogram the TCM to correct the concern.
• 10181715Sep 15, 2020Electrical system, Steering. This technical bulletin provides repair information to correct a customer concern of Service Power Steering Message Displayed in DIC, DTC?U3000?44 Set.
• 10181139Sep 14, 2020Electrical system. This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. Dealers are to cycle the power to the overhead console to correct the issue. Engineering working on releasing new overhead console.
• 10181138Sep 11, 2020Body and structure. This Preliminary information communicates an issue with a service column lock message with DTC U3000 sym71,72 or 96 and engineering is working on a fix.
• 10181137Sep 11, 2020Electrical system. This Preliminary information communicates an issue with the SIR MIL turning on and DTC B14DC setting. Engineering is root causing the concern.
• 10181696Sep 10, 2020Electrical system. This informational bulletin provides information for dealers/technicians on Normal Characteristic - Wireless Phone Projection Audio Cuts Out Every 10 Seconds on New/Unsold Vehicles.
• 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.
• 10181660Sep 2, 2020Transmission and drivetrain. This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
• 10179651Aug 25, 2020Body and structure. This Preliminary information communicates and issue with a rattle noise from the liftgate/liftglass and how to make adjustment to correct the noise.
• 10179650Aug 25, 2020Equipment, Body and structure. This Preliminary information communicates and issue with a rattle noise from the liftgate/liftglass and how to make adjustment to correct the noise.
• 10179638Aug 17, 2020Body and structure, Wheels. This Preliminary information communicates that some customers may comment on a rattle, flutter, flapping, and/or wind type noise from the front end caused by either the left or right front inner wheel well liner having excessive movement.
• 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.
• 10179633Aug 11, 2020Transmission and drivetrain, Equipment, Electrical system. This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues with modules Engineering is working on a fix
• 10179632Aug 11, 2020Transmission and drivetrain, Electrical system, Equipment. This Preliminary information communicates how to shift the transmission into neutral for various service procedures.
• 10180293Aug 10, 2020Transmission and drivetrain. This informational bulletin explains possible normal condition of a flare from 1st to 2nd, even if the trans had been repaired for the flare and its still noticed.
• 10179628Aug 7, 2020Transmission and drivetrain, Electrical system. This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues with modules Engineering is working on a fix
• 10178409Jul 30, 2020Engine, Engine cooling. Service Update - certain vehicles may have a condition where the engine oil cooler line is not fully seated into the quick connect at the radiator. Dealers are to inspect the engine oil cooler lines at the quick connector on the radiator to confirm they are fully seated.
• 10178394Jul 29, 2020Electrical system. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 10178369Jul 10, 2020Electrical system. This Preliminary information communicates an issues with front park assist false alerts caused by a software issues. Engineering is working on new software to correct this concern.
• 10178368Jul 10, 2020Body and structure, Equipment. This Preliminary information communicates and issue with the front License Plate Bracket not fitting to the fascia correctly and advises dealership how to correct the fit issue.
• 10178325Jun 12, 2020Engine, Equipment. This Preliminary Information communication advises the technician that the Product Quality Center has a part restriction for the Engine Control Module. The dealer technician is advised to call the GM Product Quality Center for further assistance

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