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
| 22-NA-232 | 2022-12-06. Service bulletin. POWER TRAIN. This informational bulletin advises the technician of a possibly noise coming from the transmission oil pump. |
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| 22-NA-227 | 2022-12-06. Service bulletin. STRUCTURE; EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of the Rear Washer System Inoperative, or Boot to Washer Hose Disconnection and Possible Hose Leaking. |
| 22-NA-222 | 2022-12-06. Service bulletin. SUSPENSION; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to remove the conduit from the harness for the accelerometer to correct the condition of Message “Service Suspension System” Displayed and/or DTC C102Exx. |
| 22-NA-216 | 2022-12-06. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin advises the technician to Inspect the position of the head gasket locating tabs to determine if the head gasket(s) has been possibly installed backwards to correct a concern of an Engine Thermostat Tick Noise and/or Running Hot. |
| 22-NA-168 | 2022-12-06. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This bulletin provides diagnostic information when checking the exhaust system for leaks. |
| 20-NA-138 | 2022-12-06. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management. |
| 19-NA-136 | 2022-12-06. 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. |
| 22-NA-225 | 2022-12-03. Service bulletin. POWER TRAIN. This information advises the technician the difference between a welch cap leak and the output seal of the t-case or transmission leaking ATF causing the customers concern. |
| 22-NA-074 | 2022-12-03. 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. |
| 21-NA-271 | 2022-12-03. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin advises the technician of a possible coolant hose that might be kinked causing the customers concern. |
| 19-NA-255 | 2022-12-03. Service bulletin. 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). |
| 18-NA-361 | 2022-12-03. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL. 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. |
| PIT5888B | 2022-11-21. Service bulletin. SERVICE BRAKES; SUSPENSION; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). 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. |
| PIP5845A | 2022-11-21. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. 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. |
| PIT5940A | 2022-11-21. Service bulletin. BACK OVER PREVENTION: SENSING SYSTEM: CAMERA. This Preliminary information communicates that a customer may notice that the gridlines on the backup camera are very dim. They may mention that this occurred after an OTA update. The dealer technician is advised to perform no repairs. The technician is advised that engineering is looking into a resolution and the resolution will be communicated through this PI or a bulletin when it becomes available. |
| PIT5917B | 2022-11-21. Service bulletin. FUEL SYSTEM, OTHER:FUEL FILTER. 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. |
| PIT5946 | 2022-11-21. Service bulletin. 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. |
| 22-NA-222 | 2022-11-09. Service bulletin. SUSPENSION; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to remove the conduit from the harness for the accelerometer to correct the condition of Message “Service Suspension System” Displayed and/or DTC C102Exx. |
| 22-NA-127 | 2022-11-09. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides repair information on release of Radio Software Version V160 Update to correct customer concerns of radio software issues. |
| 22-NA-218 | 2022-11-03. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin advises the technician on normal noises produced by the engine and to explain this to the customer. |
| 17-NA-271 | 2022-11-03. Service bulletin. WHEELS; SERVICE BRAKES, HYDRAULIC. This bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customers concern of wheel clicking. |
| 22-NA-216 | 2022-11-03. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin advises the technician to Inspect the position of the head gasket locating tabs to determine if the head gasket(s) has been possibly installed backwards to correct a concern of an Engine Thermostat Tick Noise and/or Running Hot. |
| 22-NA-214 | 2022-11-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This service bulletin provides a procedure to repair a customer concern of Stop/Start System Inhibited / IBS / Battery Monitor with Module Malfunction Indicator Light (MIL) Illuminated - DTC U152D, P15FF, P305D, P305E, U01B0 Set. |
| 22-NA-209 | 2022-11-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Articulating Running Board Inoperable. |
| 22-NA-205 | 2022-11-02. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides information on Module Harvesting. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.