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.

• 10237677May 22, 2023Electrical system, Other or unknown, Air bags. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system…
• 10237349May 22, 2023Equipment. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
• 10237340May 22, 2023Wheels. This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel).
• 10237245May 17, 2023Brakes. This bulletin provides a replacement procedure for brake pads due to squealing, per Brake Squeal Noise at Low Speeds.
• 10237232May 17, 2023Fuel system, Electrical system, Engine cooling. This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset.
• 10237663May 16, 2023Other or unknown. This Preliminary information communicates how to change a regular vehicle to fleet mode that was not built with the option.
• 10237659May 15, 2023Transmission and drivetrain, 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…
• 10237657May 12, 2023Suspension. This Preliminary information communicates a diagnostic tip for a thump, click, pop, clunk type noise that is heard from the front end. Dealers are to inspect for something contacting the grill shutters as they open and close.
• 10237653May 11, 2023Electronic stability control, Transmission and drivetrain, Electrical system…. This Preliminary information communicates an issue with a SES MIL on and DTC U0139 set in the ECM. Dealers are to cycle the power to the suspension control module to correct this issue.
• 10237652May 11, 2023Equipment. This Preliminary information communicates Diagnostic Tips When Having Difficulties Programming Or Adding Key Fobs / Transmitters.
• 10237651May 11, 2023Back-over prevention (rear camera). This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
• 10236318May 8, 2023Engine cooling. This service bulletin provides a procedure to replace the valve lifter and guides to correct customer concerns of Poor Engine Performance, Engine Misfires, Malfunction Indicator Lamp (MIL) Illuminated - DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 Set.
• 10238494May 5, 2023Electrical system. This Preliminary information communicates an issues after After Performing Recall N222386380 Some Police Options / Features May Have Been Unintentionally Enabled or Disabled. Dealers are to reprogram the BCM to correct these concerns.
• 10236073May 5, 2023Body and structure, Equipment. This technical bulletin provides multiple procedures and information in regard to possible waterleaks.
• 10236071May 5, 2023Seats, Electrical system, Air bags. This technical bulletin provides a procedure to correct the condition of Service Restraint System Message / Air Bag Warning MIL / DTC B14DC Set.
• 10236051May 4, 2023Body and structure. This technical bulletin provides a step by step procedure to replace the pressure relief valve due to Flutter Noise from Right Rear Corner of the Vehicle.
• 10236041May 3, 2023Exterior lighting. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
• 10236173Apr 28, 2023Electronic stability control, Electrical system, Transmission and drivetrain…. This Preliminary information communicates an issue with a SES MIL on and DTC U0139 set in the ECM. Dealers are to cycle the power to the suspension control module to correct this issue.
• 10236172Apr 28, 2023Latches, locks and linkages, Equipment. This Preliminary information communicates where to find the back antenna for learning new key fobs.
• 10236171Apr 27, 2023Forward collision avoidance, Lane departure. This Preliminary information communicates an issue with adaptive cruise and lane keep assist inoperative due to an internal issue with the front view windshield camera. Dealers are to replace the camera.
• 10235799Apr 27, 2023Wheels. This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
• 10236169Apr 26, 2023Equipment, Air bags, Transmission and drivetrain, Electrical system. This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights Inoperative - Power Liftgate Inoperative when using switch in overhead console - DTCs U1121 set in the BCM and B1A7A set in the Restraints Module Dealers are to replace the overhead roof console with a new…
• 10236168Apr 25, 2023Electrical system. This Preliminary information communicates an issue with high resistance in the glass breakage loop that could cause a dead battery or unwanted theft alarm. Dealers are to inspect the glass breakage loop.
• 10236167Apr 25, 2023Other or unknown, Electrical system. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system…
• 10235798Apr 25, 2023Other or unknown. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10236164Apr 24, 2023Engine cooling. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
• 10235802Apr 24, 2023Engine cooling. This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
• 10235716Apr 21, 2023Wheels. This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel).
• 10235766Apr 19, 2023Engine cooling. This service bulletin provides a procedure to replace the valve lifter and guides to correct customer concerns of Poor Engine Performance, Engine Misfires, Malfunction Indicator Lamp (MIL) Illuminated - DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 Set.
• 10235713Apr 19, 2023Equipment. This bulletin provides information on Warranty Administration – Required Operating Procedures - 8 Points (U.S. Only).
• 10235758Apr 17, 2023Transmission and drivetrain, Electrical system. This informational bulletin provides a possibly source of corrosion in the RDM electrical wiring harness and connector.
• 10235757Apr 17, 2023Engine cooling. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine.
• 10235617Apr 11, 2023Electrical system, Brakes. 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.
• 10234621Apr 6, 2023Other or unknown, Equipment. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10234620Apr 6, 2023Equipment. This service bulletin provides information on proper use of floor mats.
• 10234619Apr 6, 2023Transmission and drivetrain. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
• 10234623Apr 5, 2023Engine cooling. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine.
• 10236134Apr 4, 2023Transmission and drivetrain, Electrical system, Air bags. This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights Inoperative - Power Liftgate Inoperative when using switch in overhead console - DTCs U1121 set in the BCM and B1A7A set in the Restraints Module Engineering is currently working on a fix and in the meantime…
• 10235561Apr 4, 2023Steering, Engine cooling, Body and structure, Transmission and drivetrain…. This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
• 10235402Apr 4, 2023Electrical system, Equipment. This service bulletin provides repair information to update radio software to correct customer concerns of Software related issues.
• 10235398Apr 4, 2023Equipment, Electrical system, Engine cooling. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
• 10235405Apr 3, 2023Electrical system, Equipment. 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.
• 10234168Mar 31, 2023Equipment, Body and structure. This technical bulletin has you remove flash and reinstall clip to correct condition of Arm Rest Does Not Lock in Position and Slides Back and Forth.
• 10234171Mar 30, 2023Engine cooling. This bulletin provides diagnostic information when checking the exhaust system for leaks.
• 10234236Mar 23, 2023Body and structure. This Preliminary information communicates an issue with high resistance in the glass breakage loop that could cause a dead battery or unwanted theft alarm. Dealers are to inspect the glass breakage loop.
• 10234163Mar 23, 2023Equipment, Electrical system. This service bulletin provides information on the EL-52800 Diagnostic & Charge Battery Station (DCBS) – FAQs.
• 10234153Mar 23, 2023Electrical system, Equipment, Body and structure. This technical bulletin provides repair information to correct a customer concern of Articulating Running Board Inoperable.
• 10234141Mar 23, 2023Engine cooling. This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
• 10234143Mar 22, 2023Transmission and drivetrain. This technical bulletin provides a procedure to replace the rear differential fluid to correct the rear clutches from chattering, which create a moan type noise.
• 10234229Mar 21, 2023Equipment. This Preliminary information communicates and issue with customers misunderstanding weather they need to bluetooth pair the factory provided headphones.

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