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.

• 10187611Dec 1, 2020Electrical system, Air bags, Seats, Equipment. Customer Satisfaction Program. In certain vehicles, driver movement can disrupt the electrical connection to the seat-mounted inboard airbag system. This airbag system is supplemental and not required equipment under applicable Federal Motor Vehicle Safety Standards. If this occurs, the vehicle?s driver information center will display a ?Service Restraints System? message to the driver before resistance at the…
• 10187372Dec 1, 2020Transmission and drivetrain. This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
• 10187339Dec 1, 2020Air bags. Customer Satisfaction Program. In certain vehicles, driver movement can disrupt the electrical connection to the seat-mounted inboard airbag system. This airbag system is supplemental and not required equipment under applicable Federal Motor Vehicle Safety Standards. If this occurs, the vehicle?s driver information center will display a ?Service Restraints System? message to the driver before resistance at the…
• 10187207Dec 1, 2020Equipment, Air bags, Engine cooling, Electrical system. Customer Satisfaction Program. In certain vehicles, driver movement can disrupt the electrical connection to the seat-mounted inboard airbag system. This airbag system is supplemental and not required equipment under applicable Federal Motor Vehicle Safety Standards. If this occurs, the vehicle?s driver information center will display a ?Service Restraints System? message to the driver before resistance at the…
• 10187157Dec 1, 2020Transmission and drivetrain. This Preliminary information communicates an issue with the 110 volt power outlets turning off during an Auto Stop event, which is normal operation.
• 10186105Dec 1, 2020Equipment. This bulletin provides information on Warranty Administration ? Required Operating Procedures - 8 Points (U.S. Only).
• 10186058Dec 1, 2020Transmission and drivetrain, Electrical system. This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
• 10186045Dec 1, 2020Air bags, Electrical system, Equipment. Customer Satisfaction Program. In certain vehicles, driver movement can disrupt the electrical connection to the seat-mounted inboard airbag system. This airbag system is supplemental and not required equipment under applicable Federal Motor Vehicle Safety Standards. If this occurs, the vehicle?s driver information center will display a ?Service Restraints System? message to the driver before resistance at the…
• 10185706Dec 1, 2020Transmission and drivetrain. This Preliminary information communicates an issue with the 110 volt power outlets turning off during an Auto Stop event, which is normal operation.
• 10184518Nov 30, 2020Air bags. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the airbag lamp illuminated on the driver?s information center (DIC).
• 10184143Nov 30, 2020Equipment, Suspension. This Preliminary information communicates an issue with how to properly inspect and ensure the air lines for the air suspension system are fully seated.
• 10184521Nov 25, 2020Engine cooling, Electrical system. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service Engine Soon Lamp being illuminated.
• 10184480Nov 25, 2020Equipment. This warranty administration bulletin provide policy information for variable diagnostic time allowances on select labor operations (U.S. Only).
• 10184140Nov 25, 2020Equipment, Visibility (wipers, defrost, mirrors). This Preliminary information communicates an issue with a gurgle noise from the sunroof drains and advises customers to turn on the HVAC blower to clear the drain.
• 10184529Nov 24, 2020Electrical system, Brakes, Equipment. Customer Satisfaction Program (Programming Suspended/Resumed) - 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.
• 10184498Nov 24, 2020Equipment, Visibility (wipers, defrost, mirrors). This technical bulletin provides repair information to correct a customer concern of a gurgle or sloshing noise heard coming from the front sunroof drain hose areas.
• 10184484Nov 23, 2020Transmission and drivetrain, Equipment. This technical bulletin provides a procedure to replace the 4 5 6 clutch housing if the bushing was found worn and the cause of the customers concern.
• 10184527Nov 20, 2020Electrical system, Engine. Service Update. Certain vehicles may present a broken engine valve spring. This may cause the engine to run rough, an engine knocking or ticking noise, a check engine light illumination, or a possible vehicle stall. Dealers are to perform the inspection procedure contained within this bulletin.
• 10184135Nov 20, 2020Equipment, Electrical system, Engine. 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
• 10184525Nov 19, 2020Equipment, Body and structure. Customer Satisfaction program. Certain vehicles may have a condition in which the trailering label has zeroed out information on the label. Information such as Gross Combined Weight Rating (GCWR), Conventional Trailering Weight Rating (TWR) and Max Tongue Weight may show a zero instead of the proper amounts. Install the updated label.
• 10184501Nov 19, 2020Engine, Transmission and drivetrain. This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
• 10184130Nov 19, 2020Electrical system, Equipment. This Preliminary information communicates and issue with programming a replacement side object detection module and engineering is working on the issue.
• 10184128Nov 19, 2020Transmission and drivetrain, Electrical system, Equipment. This Preliminary information communicates and issues with Fuse F49 blowing causing a SES MIL and a Service Theft Deterrent System message displayed in the DIC. It instructions dealership to inspect the 12 volt power accessory port for shorting out.
• 10184526Nov 18, 2020Exterior lighting, Electrical system. Customer Satisfaction Program - Certain 2021 model year Chevrolet Suburban and Tahoe vehicles, may have a condition in which the daytime running lamps may shift to a bluer shade of white in its lit appearance. This will remain in effect until the headlamp cools. Replace left and right headlamp LED driver module assemblies.
• 10184126Nov 18, 2020Equipment. This Preliminary information communicates and issue with customers misunderstanding weather they need to bluetooth pair the factory provided headphones.
• 10184517Nov 17, 2020Air bags. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the airbag lamp illuminated on the driver?s information center (DIC).
• 10184497Nov 17, 2020Electrical system, Engine. This technical bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6.
• 10184123Nov 17, 2020Body and structure. This Preliminary information communicates and issue with the hands free liftgate feature being inoperative after the vehicle has been turned off for an extended time. Dealers are to reprogram the BCM to correct this concern.
• 10184500Nov 16, 2020Fuel system, Engine cooling. This Informational Bulletin provides information on availability of Diesel Fuel additives.
• 10184488Nov 13, 2020Equipment, Electrical system. This service bulletin provides repair information to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated with DTCs U1961, U1983 setting.
• 10184108Nov 13, 2020Electrical system, Seats, Body and structure. This Preliminary information communicates and issue where the drivers memory seat will not move to its full travel and dealers are to perform a SPS setup procedure to the K40D Drivers Seat Adjuster Memory Module.
• 10184107Nov 13, 2020Electrical system, Equipment. This Preliminary information communicates and issue with a either a Service Leveling or Service Headlight message displayed on the DIC. When checking for DTC's a U0132 for Lost Communication with K5 Automatic Level Control Module (ALCM) may be set in several modules. When trying to communicate with the Automatic Level Control Module there will be no communication. Engineering is working on a fix.
• 10184499Nov 12, 2020Equipment, Wheels. This service bulletin provides information on Chemical Staining, Pitting, Corrosion and/or Spotted Appearance of Chromed Aluminum Wheels.
• 10184105Nov 11, 2020Wheels, 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.
• 10184504Nov 6, 2020Visibility (wipers, defrost, mirrors). This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic.
• 10184503Nov 6, 2020Body and structure, Equipment. Thins informational bulletin provides information on Paint-less Dent Repair Process.
• 10184515Nov 5, 2020Electrical system, Body and structure. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the power liftgate inoperative.
• 10184513Nov 5, 2020Electrical system, Equipment. This engineering informational bulletin 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.
• 10184100Nov 5, 2020Equipment, Electrical 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.
• 10184098Nov 5, 2020Equipment. This Preliminary information communicates a condition where the radio may display a :connection not availale, please call OnStar agent". This bulletin advises that Engineering is working on a software solution that will prevent the message from displaying when listening to non-SXM sources, but still allow the message to display when a loss of connectivity exists and the user is attempting to play Sirius XM.
• 10184095Nov 5, 2020Engine. This Preliminary information communicates 6.2L engine restriction, Contact TAC
• 10182583Oct 29, 2020Body and structure, Electrical system. This Preliminary information communicates an issue with the power liftgate inoperative and engineering working on the issue.
• 10182582Oct 29, 2020Engine cooling, Electrical system. This Preliminary information communicates an issues with an SES MIL and DTC P2B87 setting. Engineering is working on releasing updated BCM cals to correct the concern.
• 10183800Oct 28, 2020Body and structure. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to paint concerns with the front and/or rear fascias.
• 10183132Oct 28, 2020Equipment, Engine cooling. This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
• 10182580Oct 28, 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
• 10183198Oct 27, 2020Electrical system. This service bulletin provides information and a service procedure for dealers/technicians on OnStar Over the Air Update for TTY / TDD Operation and Continuous Improvement Changes.
• 10182575Oct 27, 2020Electrical system. This Preliminary information communicates an issue with a low or dead battery issue cause by the rear hvac door being jammed by an foreign object.
• 10182572Oct 27, 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.
• 10183782Oct 23, 2020Transmission and drivetrain, Electrical system, Equipment. The intent of this technical 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.

← All problems reported for the 2021 Chevrolet Tahoe