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.

• 10210194Apr 5, 2022Other or unknown. This informational bulletin provides information on a guide to help reduce repeat visits for the same customer concern.
• 10210196Apr 4, 2022Electrical system. This service bulletin provides repair information to correct a customer concern of Check Engine MIL Illuminated in DIC Set by Body Control Module with DTC P0607.
• 10209982Mar 31, 2022Steering, Suspension. This engineering information (EI) closure ends the need for further information from the field in regards to a Popping Noise Heard On Hard Turns and/or Going Over Speed Bumps, Creaking Noise While Turning Wheel Left and/or Right, Clicking Noise Heard On Slow Sharp Turns.
• 10209980Mar 31, 2022Engine 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.
• 10209981Mar 30, 2022Transmission and drivetrain, Engine cooling. This engineering information (EI) closure ends the need for further information from the field in regards to Engine Coolant Reservoir Being Overfilled with Discolored Coolant, Shudder, Shake, Vibration, Harsh Shift, Delayed Shift and/or Slipping Transmission Performance.
• 10209977Mar 30, 2022Equipment. This service bulletin provides information for replacement parts traceability (RPT) process to aid in tracking part replacements.
• 10209955Mar 30, 2022Engine cooling. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine.
• 10209958Mar 29, 2022Body and structure. 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.
• 10210348Mar 28, 2022Electrical system. This Preliminary Information communication provides information to the technician about a no start or another concern after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.
• 10209743Mar 25, 2022Wheels, Equipment. This bulletin updates the position of General Motors on refinishing fully color painted aluminum wheels with base paint. GM has established a new process for the way that refinishing under GM Warranty will be handled (U.S. ONLY).
• 10210341Mar 23, 2022Engine cooling, Transmission and drivetrain. This Preliminary information communicates to the dealer technician that if the vehicle's engine coolant reservoir has transmission fluid in it or if Glycol it found in the transmission fluid the dealer should replace the Automatic Transmission Fluid Cooling Exchanger. The dealer should refer to bulletin 08-07-30-035 for the recommended components that should be replaced in the transmission and to flush the engine…
• 10209945Mar 23, 2022Engine cooling. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to oil leaking from the lower oil pan seal area.
• 10209921Mar 22, 2022Engine cooling. This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
• 10209907Mar 22, 2022Electrical system. This technical bulletin provides repair information to correct a customer concern of Short Range Radar (SRR) with DTC U3000 49 Set.
• 10209747Mar 22, 2022Equipment. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
• 10209923Mar 21, 2022Engine cooling, Transmission and drivetrain. This informational bulletin provides graphs to help identify possible issues that may cause shaking and shudders and what may be the cause of said issue.
• 10209465Mar 16, 2022Engine cooling, Fuel system. This informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence.
• 10209511Mar 15, 2022Forward collision avoidance, Electrical system. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a Forward Collision Icon Message Illuminated on Driver Information Center (DIC) and/or No DTCs Set.
• 10209466Mar 15, 2022Body and structure. This technical bulletin provides a procedure to install foam on window motors to prevent them from rubbing on the panels causing a noise.
• 10210326Mar 9, 2022Suspension. 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.
• 10210322Mar 7, 2022Visibility (wipers, defrost, mirrors). This Preliminary information communicates an issue with poor heater performance and advises dealerships to inspect the heater core inlet and outlet hoses for being twisted or kinked.
• 10210321Mar 7, 2022Wheels, 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.
• 10210319Mar 7, 2022Equipment. This Preliminary information communicates information on how dealers can contact the supplier for Associated Accessories offered through GM.
• 10209120Mar 3, 2022Transmission and drivetrain. This technical bulletin provides a procedure to seal the exhaust at the UFSCR and Tailpipe flange.
• 10208900Mar 3, 2022Electrical system. This service bulletin provides repair information to correct a customer concern of DTC B1038.64 set in the BCM and Door Ajar Message on Driver Information Center (DIC).
• 10209134Mar 2, 2022Electrical system. This Engineering Information (EI) Closure ends the need for further information from the field regarding No Heat from Driver Side Inboard Dash Duct and/or Weak Heat On Driver Side.
• 10209122Mar 2, 2022Engine cooling. Information bulletin explains a possible coolant leak coming from the cylinder head bolt areas.
• 10209118Mar 1, 2022Other or unknown. 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.
• 10214226Feb 28, 2022Electrical system. This technical bulletin provides a procedure to update the EOCM if found the cause of the customers concern.
• 10208993Feb 25, 2022Engine cooling. This Preliminary information communicates to technicians to modify the camshaft housing cover insulator by removing the stand off identified in the attached pictures.
• 10208991Feb 24, 2022Electrical system. This Preliminary information communicates a process to correct the concern of Unable to contact OnStar after the 3G EOL on 2015-2022 model year vehicles in the United States.
• 10208986Feb 14, 2022Transmission and drivetrain. This Preliminary information communicates an issue with the power liftgate inoperative and engineering working on the issue.
• 10208984Feb 14, 2022Visibility (wipers, defrost, mirrors). 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.
• 10215772Feb 10, 2022Other or unknown, Brakes. Engineering Information.
• 10208978Feb 9, 2022Transmission and drivetrain. This Preliminary information communicates that engineering is investigating a repair for a chirp noise associated with the front axle assembly.
• 10214223Feb 4, 2022Equipment. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
• 10208971Feb 3, 2022Wheels, 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.
• 10215778Feb 1, 2022Other or unknown. Engineering Information.
• 10215777Feb 1, 2022Other or unknown. Engineering Information.
• 10215776Feb 1, 2022Other or unknown. Engineering Information.
• 10215768Feb 1, 2022Electrical system, Body and structure. Check Engine MIL Illuminated in DIC Set by Body Control Module with DTC P0607
• 10214239Feb 1, 2022Transmission and drivetrain. 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.
• 10214225Feb 1, 2022Engine cooling. This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing.
• 10208964Feb 1, 2022Transmission and drivetrain. This Preliminary information communicates to technicians to replace the rear cover with seal in the event of a rear oil seal leak.
• 10208076Jan 31, 2022Other or unknown. This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues between the modules.
• 10208071Jan 31, 2022Transmission 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 has released updated cals to correct this concern.
• 10208070Jan 31, 2022Transmission and drivetrain. This Preliminary information communicates that engineering is investigating a repair for a chirp noise associated with the front axle assembly.
• 10208069Jan 31, 2022Suspension, Electronic stability control, Brakes. This Preliminary information communicates an issue with the air leveling suspension losing air pressure in very cold temperatures while sitting for several hours. Engineering is working on a fix.
• 10214206Jan 28, 2022Engine cooling, Equipment. This technical bulletin provides a procedure to seal the exhaust at the UFSCR and Tailpipe flange.
• 10213778Jan 28, 2022Equipment, Transmission and drivetrain, Seat belts. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Power Floor Console Armrest will not lock in place and/or the console lid slides back and forth freely.

← All problems reported for the 2021 Chevrolet Suburban