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
| 21-NA-028 | 2023-01-25. Service bulletin. POWER TRAIN. This technical bulletin provides a procedure to replace the rear diff fluid to correct the rear clutches from chattering, which create a moan type noise. |
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| 22-NA-251 | 2023-01-25. Service bulletin. POWER TRAIN; WHEELS. This technical bulletin provides a procedure to replace the front wheel drive shaft if found the cause of the custmers concern. |
| 22-NA-115 | 2023-01-25. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention. |
| 21-NA-106 | 2023-01-25. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This service bulletin provides information for the technician that may experience a condition when after performing a DTC Clear/Reset on the TCM during diagnosis or after completion of a transmission repair or replacement, the DTCs did not clear or appear to reset on the next engine start. |
| 20-NA-018 | 2023-01-25. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides information for dealers/technicians on MDI 2 Required When Programming Vehicles with Vehicle Intelligence Platform (VIP). |
| N212355140 | 2023-01-24. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Service Update Bulletin - Certain vehicles may have a condition where the engine control module has an incorrect calibration. Dealers are to reprogram the engine control module. |
| 22-NA-257 | 2023-01-06. Service bulletin. WHEELS. This service bulletin provides information on Dealer Installed LPO Wheel Installation and Return Process. |
| 22-NA-182 | 2023-01-06. Service bulletin. POWER TRAIN. This informational bulletin advises the tech to check if the trans cooler lines are twisted which may cause the customers concern. |
| 19-NA-136 | 2023-01-06. Service bulletin. POWER TRAIN. This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto Mode. |
| 09-00-89-008F | 2023-01-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process. |
| 21-NA-124 | 2023-01-06. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set. |
| 18-NA-073 | 2023-01-06. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement. |
| 16-NA-338 | 2023-01-05. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only. |
| 22-NA-247 | 2022-12-24. Service bulletin. SERVICE BRAKES, HYDRAULIC. This service bulletin provides information to dealership personnel that after performing a brake inspection, brake pad replacement, or any other repair that requires the caliper piston to be reseated may be causing DTC C05B0 to falsely set for eBoost applications. |
| 22-NA-244 | 2022-12-21. Service bulletin. EQUIPMENT. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period. |
| 21-NA-149 | 2022-12-15. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing. |
| PIT5851C | 2022-12-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary information communicates an issues with the odometer being incorrect after a programming event and how the dealership can resolve the issue. |
| PIT3271N | 2022-12-12. Service bulletin. WHEELS; 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. |
| PIT5832D | 2022-12-12. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly. |
| PIT5958 | 2022-12-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary information communicates an issue with the 2nd row bucket seat having side to side movement. GM engineering is working on a fix. |
| PIT5481H | 2022-12-12. Service bulletin. STEERING; LANE DEPARTURE. This Preliminary Information communication provides information to the technician with additional information on the functionality of Lane Keep Assist. Starting with 2016 model year Lane Keep Assist Regular Production Option Code (UHX) replaced Lane Departure Warning Regular Production Option Code (UFL). Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of a driving lane that has clearly identified markings. The electric power steering provides a gentle steering correction if a lane marking has been crossed and the driver has not actively responded. |
| PIT5874 | 2022-12-12. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM. This Preliminary information communicates an issue with the GDS2 scan tool not being able to communication with the front view camera module and provides a work around until GDS2 is fixed. |
| PIT5851B | 2022-12-12. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER. This Preliminary information communicates an issues with the odometer being incorrect after a programming event and how the dealership can resolve the issue. |
| 22-NA-238 | 2022-12-07. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative. |
| 22-NA-052 | 2022-12-07. Service bulletin. LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of DTC B1038 SYM64 set in the BCM and Door Ajar Message on Driver Information Center (DIC). |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.