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.

• 10252975Apr 5, 2024Brakes. This bulletin provides a replacement procedure for brake pads due to squealing Noise at Low Speeds.
• 10252988Apr 2, 2024Equipment, Electrical system. This technical bulletin provides repair information to correct a customer concern of the E88 Front Floor Console Bin Lamp Inoperative.
• 10253116Mar 28, 2024Suspension, Electronic stability control. This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 caused by a pinched air inlet hose to the suspension compressor air leveling system.
• 10252735Mar 28, 2024Electrical system. This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
• 10252745Mar 27, 2024Body 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).
• 10253111Mar 26, 2024Electrical system. This Preliminary information communicates a vehicle may come to the dealer with a complaint of no start, stalling, rough idle, no acceleration, loss of power, erratic shifting, fuel gauge inoperative, MIL illuminated with various codes stored. Technicians are directed to replace the K111FPDCM if any of these conditions can be validated and code P023F or P129F is found.
• 10252774Mar 26, 2024Electrical system, Equipment. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
• 10252841Mar 25, 2024Equipment, Electrical system. This technical bulletin provides repair information to correct a customer concern of the E88 Front Floor Console Bin Lamp Inoperative.
• 10252778Mar 25, 2024Transmission and drivetrain. This service bulletin provides diagnostic information for technicians in cases of an ETRS system fault or a no start condition - If the vehicle needs to be moved, it is recommended to use wheel dollies, tire skates or the NEW Manual Park Release tool DT-52910.
• 10253105Mar 22, 2024Equipment. This Preliminary information communicates and issue with the LED right above the wireless charging pad being inoperative and how to resolve the concern with the LED.
• 10253102Mar 22, 2024Electrical system. This Preliminary information communicates Diagnostic Tips When Having Difficulties Programming Or Adding Key Fobs / Transmitters.
• 10253098Mar 21, 2024Electrical system. This Preliminary information communicates a vehicle may come to the dealer with a complaint of no start, stalling, rough idle, no acceleration, loss of power, erratic shifting, fuel gauge inoperative, MIL illuminated with various codes stored. Technicians are directed to replace the K111FPDCM if any of these conditions can be validated.
• 10252126Mar 21, 2024Equipment. This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the GM Technical Assistance Center (TAC).
• 10252125Mar 21, 2024Engine cooling. This service bulletin advises the technician of possible coolant entering the areas of the engine, either through failed parts or defects in the castings, that may be the cause of the concerns related to the MIL or the engine running rough.
• 10252124Mar 21, 2024Body 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).
• 10252123Mar 20, 2024Equipment, Electrical system. This service bulletin provides repair information to correct a customer concerns of Radio Software issues.
• 10252108Mar 20, 2024Brakes. This bulletin provides a replacement procedure for brake pads due to squealing Noise at Low Speeds.
• 10253090Mar 18, 2024Equipment. This Preliminary information communicates and issue with customers misunderstanding weather they need to bluetooth pair the factory provided headphones.
• 10252117Mar 18, 2024Transmission and drivetrain, Electrical system. 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 you the valve body.
• 10252107Mar 18, 2024Equipment, Fuel system. This technical bulletin provides a procedure replace the tappet that is located on the fuel door.
• 10253087Mar 15, 2024Visibility (wipers, defrost, mirrors). 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 has released updated roof consoles to correct this concern. Dealers are to replace the roof console.
• 10253086Mar 15, 2024Brakes. This Preliminary information communicates an issue with premature brake pad life and engineering is working on release new pad lining material.
• 10251890Mar 13, 2024Engine cooling. This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
• 10253075Mar 11, 2024Equipment. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
• 10253074Mar 11, 2024Electrical system. This Preliminary information communicates where to find the back antenna for learning new key fobs.
• 10251909Mar 11, 2024Electrical system, Engine cooling, Transmission and drivetrain. This bulletin advises the tech to inspect deeper into what may be the main cause of an engine failure.
• 10251888Mar 11, 2024Equipment. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
• 10251889Mar 10, 2024Equipment. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10253071Mar 7, 2024Electrical system. This Preliminary information communicates a vehicle may come to the dealer with a complaint of no start, stalling, rough idle, no acceleration, loss of power, erratic shifting, fuel gauge inoperative, MIL illuminated with various codes stored. Technicians are directed to replace the K111FPDCM if any of these conditions can be validated.
• 10251638Mar 7, 2024Fuel system. This bulletin advises the tech that there are extra characters on the fuel injector and to ignore the last numbers when identifying flow rate.
• 10253061Mar 4, 2024Brakes, Fuel system. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.
• 10253060Mar 4, 2024Equipment. This Preliminary Information communication advises the technician with a tip when the vehicle stops running after it has been idling for 2.5 hours. This is normal operation of the vehicle built with regular production code BTM and without Regular Production Option Code AVF. If the vehicle was built with regular production code BTM and AVF only has a 1 hour idle time.
• 10251635Mar 4, 2024Equipment. This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center (WPC) must be shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC.
• 10251513Mar 1, 2024Other or unknown. This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
• 10251725Feb 29, 2024Electrical system, Exterior lighting. This Preliminary information communicates a issue where the Can bus 1 data line is being corrupted by a aftermarket lighting module or poor connection installed by a Police Upfitter.
• 10251723Feb 28, 2024Suspension. This Preliminary information communicates a tip when diagnosing an inoperative air leveling suspension system and to repair any loss of comm DTC's with the power window motors first.
• 10251355Feb 26, 2024Engine 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.
• 10251353Feb 26, 2024Transmission and drivetrain. This service bulletin advises the technician to check if the transmission cooler lines are twisted to correct customer concerns of Harsh Shift, Shudder, Surge, Stall, Transmission Overheating and/or High Transmission Fluid Temperature.
• 10251714Feb 23, 2024Electrical system. This Preliminary information communicates a vehicle may come to the dealer with a complaint of no start, stalling, rough idle, no acceleration, loss of power, erratic shifting, fuel gauge inoperative, MIL illuminated with various codes stored. Technicians are directed to replace the K111FPDCM if any of these conditions can be validated.
• 10250789Feb 23, 2024Engine cooling. This service bulletin provides a repair procedure to correct customer concerns of Service Emissions System Displayed on DIC, MIL Illuminated with DTC P249C and/or P20E8 Set.
• 10250775Feb 22, 2024Engine 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.
• 10251708Feb 21, 2024Electronic stability control. This Preliminary Information communication provides information to the technician about vehicles that have an unwanted Stability Activation and/or a Service Stability message on the Driver Information Center. Technician may find a Diagnostic Trouble Code C0710. Technician should inspect for vehicles modifications before any in-depth diagnostics are performed.
• 10251706Feb 21, 2024Suspension. This Preliminary information communicates an issue with the air leveling suspension losing air pressure in very cold temperatures while sitting for several hours. Dealers are to replace both the front air springs.
• 10251704Feb 21, 2024Forward 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".
• 10251699Feb 19, 2024Latches, locks and linkages, Electrical system. This Preliminary information communicates where to find the back antenna for learning new key fobs.
• 10250566Feb 14, 2024Electrical system, Equipment. This service bulletin provides information for dealers/technicians on MDI 2 Required When Programming Vehicles with Vehicle Intelligence Platform (VIP).
• 10250747Feb 12, 2024Engine cooling, Electrical system. This service bulletin provides a repair procedure to correct customer concerns of Service Emissions System Displayed on DIC, MIL Illuminated with DTC P249C and/or P20E8 Set.
• 10250505Feb 7, 2024Engine cooling, Fuel system. This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
• 10250503Feb 7, 2024Engine cooling. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
• 10251685Feb 6, 2024Brakes. This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston installation. This grease can be cleaned off and the rest of the service completed.

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