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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

Bulletins, newest first
PIP5212D2022-07-25. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that have run hot and or has a tick noise. Technician should inspect the head gaskets to ensure are not installed backwards. Technician should replace the head gasket if they are found installed backwards.
PIT5854A2022-07-25. Service bulletin. EQUIPMENT. This Preliminary information communicates information on vehicle speed being limited due to aftermarket lower kit being installed on the vehicle.
PIC5260F2022-07-25. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. This Preliminary Information communication advises the technician the steps on diagnosing the concern. Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks.
PIT5681C2022-07-25. Service bulletin. SERVICE BRAKES. This Preliminary information communicates the location of the GM Accessory Performance Brake System Rotor Specifications
PIT5448H2022-07-25. Service bulletin. ENGINE. This Preliminary Information communication advises the technician with a tip when the vehicle stops running after it has been idling for 2.5 hours. This is normal operation of the vehicle built with regular production code BTM and without Regular Production Option Code AVF. If the vehicle was built with regular production code BTM and AVF only has a 1 hour idle time.
PIP5792D2022-07-25. Service bulletin. POWER TRAIN; FUEL SYSTEM, GASOLINE. This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder, stall or high transmission fluid temperature concern they should inspect for a twisted transmission cooler line. Technicians are instructed to disconnect the cooler line and untwist it then reconnect the cooler line and inspect the cooler line for being misshaped. Technicians are instructed to replace the cooler line if it is misshaped.
PIT5913A2022-07-25. Service bulletin. BACK OVER PREVENTION:DISPLAY FUNCTION. This Preliminary information communicates a condtion where SD card removed is being displayed on the radio display intermittently. ThisPI advises that engineering is working on a fix for this issue
PIT5099F2022-07-25. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
PIT59232022-07-25. Service bulletin. SUSPENSION; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). This Preliminary information communicates the proper component naming and labor operation codes for the air leveling system RPO F47and the Electronic Suspension Control System RPO Z95
19-NA-2182022-07-20. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine.
PIE0678A2022-07-18. Service bulletin. UNKNOWN OR OTHER. Engineering Information.
PIE06782022-07-18. Service bulletin. UNKNOWN OR OTHER. Engineering Information.
PIE0677A2022-07-18. Service bulletin. UNKNOWN OR OTHER. Engineering Information.
PIE0661A2022-07-18. Service bulletin. PARKING BRAKE:ELECTRICAL:CONTROL MODULE; UNKNOWN OR OTHER. Engineering Information.
22NA0442022-07-18. Service bulletin. STRUCTURE; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; ELECTRICAL SYSTEM. Check Engine MIL Illuminated in DIC Set by Body Control Module with DTC P0607
PIE0685A2022-07-12. Service bulletin. ENGINE AND ENGINE COOLING. This engineering information (EI) closure ends the need for further information regarding oil leaking from the lower oil pan seal area.
22-NA-1352022-07-12. Service bulletin. EQUIPMENT. This warranty admin bulletin covers information on Essential Tools that include Consumable Parts.
22-NA-0822022-07-12. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp Illuminated with DTC P06DD, P2B60, P26BB, P1098 Set.
12-01-37-001F2022-07-12. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This service bulletin provides information to dealership personnel on a new refrigerant (R1234yf) for A/C service.
PIE07092022-07-12. Service bulletin. STRUCTURE. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to having assist step insert loose, falling off and/or warped.
22-NA-1262022-07-12. Service bulletin. FORWARD COLLISION AVOIDANCE. This service bulletin provides repair information to correct a customer concern of Automatic Emergency Braking (AEB) Forward Collision Icon Lamp On with No DTCs Present.
22-NA-1152022-07-12. 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.
22-NA-0702022-07-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This service bulletin provides information for replacement parts traceability (RPT) process to aid in tracking part replacements.
21-NA-1882022-07-12. Service bulletin. EQUIPMENT. This service bulletin provides service information/procedures on continuous improvement Radio Software Version V158 Update to address customer comments on software related issues.
21-NA-0262022-07-12. Service bulletin. EQUIPMENT. This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen.

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