2021 Chevrolet Suburban Technical Service Bulletins

1,366 technical service bulletins (TSBs) are on record for the 2021 Chevrolet Suburban. 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.

• 10225611Oct 17, 2022Body and structure. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the roof panel joint finish molding being detached and/or loose from the roof retaining clip.
• 10225606Oct 17, 2022Electrical system, Equipment, Engine cooling. This service bulletin provides a repair procedure to correct a customer concern of a No Fob detected message on Driver Information Center (DIC) and/or No Crank / No Start condition.
• 10226366Oct 10, 2022Fuel system. This Preliminary information communicates an issue where there is no selection to reset the fuel filter life in the IPC and engineering is working on a fix.
• 10224856Oct 10, 2022Engine cooling, Electrical system. This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing.
• 10224850Oct 10, 2022Electrical system, Fuel system, Engine cooling. This bulletin provides a possible location of a bad connection at the reductant fluid tanks electrical connector.
• 10224820Oct 7, 2022Equipment. This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).
• 10226357Oct 4, 2022Body and structure, Electrical system. This Preliminary information communicates a diagnostic tip on how to resolve a issue with the Body Control Module setting DTC: P0606 and turning on a Check Engine Lamp.
• 10224831Oct 4, 2022Body and structure. This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.
• 10224822Oct 3, 2022Body and structure, Equipment. 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.
• 10224307Sep 30, 2022Electrical system, Other or unknown. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
• 10222843Sep 29, 2022Engine cooling, Equipment. This engineering information (EI) closure ends the need for further information from the field in regards on the rear washer hose being disconnected.
• 10224304Sep 28, 2022Other or unknown. This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.
• 10222839Sep 28, 2022Equipment. This service bulletin provides information on Handling Requests for Modifications to Permanently Import/Export Vehicles Between the U.S. and Canada.
• 10224301Sep 27, 2022Electrical system, Transmission and drivetrain, 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…
• 10222841Sep 27, 2022Electrical system. This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).
• 10222823Sep 27, 2022Engine cooling, Fuel system. This service bulletin provides information on availability of Diesel Fuel additives.
• 10224299Sep 26, 2022Fuel system. This Preliminary information communicates an issue where there is no selection to reset the fuel filter life in the IPC and engineering is working on a fix.
• 10222834Sep 26, 2022Visibility (wipers, defrost, mirrors), Body and structure, Electrical system. This technical bulletin provides repair information to correct a customer concern of Rear Hatch Liftgate Window Glass Inoperative.
• 10222827Sep 26, 2022Body and structure, Electrical system. This informational bulletin provides information for dealers/technicians on Aero Shutter Related Diagnostic Codes.
• 10222807Sep 20, 2022Engine cooling. This bulletin provides diagnostic information when checking the exhaust system for leaks.
• 10222777Sep 16, 2022Transmission and drivetrain, Brakes, Engine cooling, Suspension, Steering. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
• 10222776Sep 16, 2022Electrical system. The intent of this service 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.
• 10222771Sep 16, 2022Engine cooling. This service bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
• 10222770Sep 16, 2022Transmission and drivetrain, Engine cooling. This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
• 10222766Sep 16, 2022Engine cooling, Fuel 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.
• 10224285Sep 14, 2022Transmission and drivetrain. This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC.
• 10222796Sep 14, 2022Engine cooling. This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
• 10222780Sep 14, 2022Fuel system, Engine cooling. This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel in cold temperatures.
• 10222779Sep 14, 2022Engine cooling, Fuel system. This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
• 10222778Sep 14, 2022Engine cooling, Fuel system. This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the DEF system.
• 10222772Sep 14, 2022Engine cooling. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
• 10222765Sep 14, 2022Fuel system, Engine cooling. This service bulletin provides the technician with additional information on fuels, fuel additives and fuel management.
• 10222733Sep 14, 2022Equipment. This service bulletin provides information on a guide to help reduce repeat visits for the same customer concern.
• 10222739Sep 13, 2022Engine cooling, Fuel system. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
• 10222736Sep 13, 2022Fuel system. This service bulletin provides information on availability of Diesel Fuel additives.
• 10222734Sep 13, 2022Engine cooling. This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
• 10222732Sep 13, 2022Engine cooling. This service bulletin advises about the possible issues that may occur when using a scotch brite pad or highly abrasive disk on gasket sealing surfaces or reused parts.
• 10222782Sep 12, 2022Fuel system, Engine cooling. This informational bulletin explains why more DEF is being used in diesel engines due to new emission standards.
• 10222781Sep 12, 2022Engine cooling, Fuel system. This informational bulletin explains how to identify possible DEF contamination.
• 10222773Sep 12, 2022Fuel system, Engine cooling. This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set.
• 10222664Sep 9, 2022Engine cooling. This Informational bulletin advises the technician of a possible oil leak at the front cover and how to diagnose it to verify if it is coming from the seal or not.
• 10222660Sep 9, 2022Engine cooling. This informational bulletin provides a way for the technician to identify if the ECM has been modified.
• 10222658Sep 9, 2022Fuel system. This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part.
• 10222650Sep 9, 2022Engine cooling. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
• 10222649Sep 9, 2022Equipment. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10222205Sep 9, 2022Engine cooling. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
• 10222661Sep 8, 2022Equipment, Electrical system. This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2017-2022 and newer model year vehicles with RPO ATH and AVJ.
• 10224275Sep 6, 2022Visibility (wipers, defrost, mirrors). This Preliminary information communicates a issue where the rear windshield wipers will not be in the park position and will cause the rear back glass not to open with the switch or the RKE fob. This explains how to repair that concern.
• 10222668Sep 6, 2022Transmission and drivetrain. This informational bulletin advises the tech to check if the trans cooler lines are twisted which may cause the customers concern.
• 10220317Sep 2, 2022Body and structure, Latches, locks and linkages. This technical bulletin provides the procedure to align the right rear door to correct the condition of Right Rear Door Alignment.

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