2021 Chevrolet Tahoe Technical Service Bulletins

1,477 technical service bulletins (TSBs) are on record for the 2021 Chevrolet Tahoe. 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.

• 10183153Oct 23, 2020Engine cooling, Fuel system. This service bulletin provides information to correct a customer concern of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated.
• 10183126Oct 23, 2020Engine. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
• 10182570Oct 23, 2020Engine cooling. This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
• 10207736Oct 22, 2020Brakes. Customer Satisfaction Program. Reprogramming resumed message.
• 10182568Oct 22, 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.
• 10182567Oct 22, 2020Engine cooling. This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
• 10182565Oct 22, 2020Engine cooling. This Preliminary information communicates 6.2L engine restriction, Contact TAC
• 10207735Oct 21, 2020Brakes. Customer Satisfaction Program. Reprogramming suspended message.
• 10183779Oct 21, 2020Fuel 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.
• 10183226Oct 20, 2020Equipment, Brakes. Customer Satisfaction Program - Certain vehicles may have a condition in which the brake system control module (BSCM) may set and latch an internal fault in the module?s on-board diagnostics (OBD) buffer. When the fault is present, no malfunction indicator lamp (MIL) is illuminated and there is no driver information center (DIC) message.
• 10182561Oct 20, 2020Electrical system. This Preliminary information communicates an issue with the 110 volt power outlets turning off during an Auto Stop event, which is normal operation.
• 10183797Oct 19, 2020Electrical system. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards one or more camera views showing, intermittent behavior and/or totally inoperative.
• 10182558Oct 19, 2020Equipment. This Preliminary information communicates how to enable the power retractable assist steps during PDI.
• 10182557Oct 19, 2020Air bags. 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.
• 10183191Oct 16, 2020Equipment. This service bulletin provides information for dealers/technicians on Normal Characteristic - Wireless Phone Projection Audio Cuts Out Every 10 Seconds on New/Unsold Vehicles.
• 10182555Oct 16, 2020Engine cooling. This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
• 10182553Oct 14, 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.
• 10182552Oct 13, 2020Engine cooling. This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
• 10182550Oct 12, 2020Electrical system. This Preliminary information communicates there is a Part Restriction for the Automatic Leveling Control Module and to contact the PQC to order the part.
• 10183780Oct 9, 2020Equipment. This warranty administration bulletin provides information on Warranty Administration - Customer Concern Not Duplicated (CCND) Labor Operation Numbers.
• 10182546Oct 8, 2020Transmission and drivetrain. This Preliminary information communicates to the dealer technician that the 10L80 transmission has been place on a part restriction. Dealers are to contact the Product Quality Center before replacing the transmission assembly.
• 10182541Oct 8, 2020Equipment. 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.
• 10183203Oct 7, 2020Engine cooling, Electrical system. This technical bulletin provides a procedure to program the ECM if found the cause of the customers concern.
• 10182540Oct 7, 2020Forward 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".
• 10182539Oct 7, 2020Equipment. This Preliminary information communicates and issue with customers misunderstanding weather they need to bluetooth pair the factory provided headphones.
• 10182537Oct 7, 2020Electrical system. This Preliminary information communicates During inspection of the vehicle for an unrelated concern the technician may notice that one or more of the following Cylinder Deactivation Performance DTC(s) P3498, P3499, P349A, P349B, P349C, P349D, P349E, or P349F may be set in history. and not requesting MIL. If any of these DTCs are requesting the MIL, please follow appropriate service information for diagnosis & repair.
• 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.
• 10182535Oct 5, 2020Engine cooling. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 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.
• 10181159Sep 22, 2020Engine cooling. This Preliminary information communicates A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506, Possible valve spring concern
• 10181158Sep 22, 2020Engine cooling. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 10181653Sep 18, 2020Back-over prevention (rear camera), Visibility (wipers, defrost, mirrors). Service Update Bulletin - Certain 2021 model year Chevrolet Suburban, Tahoe, and GMC Yukon vehicles may have a kink in the rear camera washer hose. Dealers will inspect for functionality of the full display mirror (FDM) camera wash, and, if necessary, add a protective sleeve and trim the hose.
• 10181150Sep 18, 2020Electrical system, Body and structure. This Preliminary information communicates an issue with the power liftgate inoperative and engineering working on the issue.
• 10181149Sep 18, 2020Exterior lighting. This Preliminary information communicates an issue with a Check Reverse Lamp message on the DIC, but the reverse light operate. Engineering working on a fix.
• 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.

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