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Service bulletins for the 2021 Chevrolet Suburban

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1440 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
PIE06932022-05-06. Service bulletin. ENGINE AND ENGINE COOLING. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Oil Leaking from Front of Engine.
22-NA-0802022-05-03. Service bulletin. ENGINE AND ENGINE COOLING. This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.
22-NA-0272022-05-03. Service bulletin. ENGINE AND ENGINE COOLING. This technical bulletin advises to replace the camshaft cover if found within the Julian date and the cause of a customer concern of possible oil consumption with or without DTC P06DD.
22-NA-0822022-04-30. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This technical bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp Illuminated with DTC P06DD, P2B60, P26BB, P1098 Set.
PIP58452022-04-18. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. 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 cooling system following service information.
PIE0676A2022-04-06. Service bulletin. POWER TRAIN; ENGINE AND 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.
22-NA-0742022-04-06. Service bulletin. ENGINE AND ENGINE 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.
19-NA-2182022-04-05. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine.
PIE06852022-04-05. Service bulletin. ENGINE AND ENGINE 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.
22-NA-0152022-04-05. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. 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.
22-NA-0092022-04-05. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
20-NA-0382022-04-01. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. This informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence.
22-NA-0472022-03-18. Service bulletin. ENGINE AND ENGINE COOLING. Information bulletin explains a possible coolant leak coming from the cylinder head bolt areas.
PIP58402022-03-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR. This Preliminary information communicates to technicians to modify the camshaft housing cover insulator by removing the stand off identified in the attached pictures.
PIP5808A2022-02-14. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates to technicians to replace the ECM and affected sensor if diagnostics leads to replacement of the ECM.
PIP5791A2022-02-14. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates to dealership technicians to perform a sweep of the coolant flow control valve and test the circuits before replacing the Engine Coolant Flow Control Valve, and to assist engineering in root causing the P2B60.
PIT5479E2022-02-14. Service bulletin. ENGINE AND ENGINE COOLING. 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.
PIP5632F2022-02-14. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
21NA2372022-02-14. Service bulletin. UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:COOLING SYSTEM. THis technical bulletin provides a procedure to perform a cooling system flush to remove possible debris from the cooling system pipes.
PIP5828B2022-01-24. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. This Preliminary information communicates to technicians the need to reflash the reductant controller for a P205B intermittently setting.
PIP5828A2022-01-24. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. This Preliminary information communicates to technicians the need to reflash the reductant controller for a P205B intermittently setting.
PIP58322022-01-24. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. This Preliminary information communicates to the dealer an issue where a vehicle may be exhibiting an engine noise condiion. The dealer is instructed on how to isolate the noise to a specific area of the engine for further diagnosis.
PIP5628E2022-01-24. Service bulletin. ENGINE AND ENGINE 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
PIE0662A2022-01-03. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Reductant Tank Temperature Sensor Performance and/or Service Emissions System Message on Driver Information Center (DIC), DTC P205B Set.
21NA2722021-12-27. Service bulletin. EQUIPMENT; ENGINE; ENGINE AND ENGINE COOLING. This service bulletin provides information on Engine Oil Consumption Guidelines.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.