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Service bulletins for the 2021 GMC Yukon

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.

1240 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
22-NA-1502023-03-04. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset.
23-NA-0112023-02-23. Service bulletin. ENGINE AND ENGINE COOLING. This Informational bulletin advises the technician of possible areas the oil may leak from the engine.
21-NA-1322023-02-23. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This informational bulletin provides Changes to the Automatic Stop/Start feature for Certain 2021 Escalade models, Silverado 1500, Suburban, Tahoe, Sierra 1500, Yukon models Equipped with RPO NSS.
19-NA-2182023-02-23. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine.
22-NA-1152023-02-21. 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.
N212355140-012023-02-17. Service bulletin. ENGINE AND ENGINE COOLING. Service Update- Certain vehicles may have a condition where the engine control module calibrations can be enhanced to improve the accuracy of certain diagnostic tests. Dealers are to reprogram the engine control module.
22-NA-0152023-02-08. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. 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.
21-NA-0952023-02-08. Service bulletin. ENGINE AND ENGINE COOLING. This technical bulletin provides a procedure to seal the exhaust at the UFSCR and Tailpipe flange.
22-NA-2482023-02-08. Service bulletin. EQUIPMENT; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ENGINE AND ENGINE COOLING. This technical bulletin provides service information to correct a customer concern of HVAC Heat Intermittently Inoperative, DTCs B2B05 and/or B2B06 Set.
22-NA-2202023-02-08. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. This technical bulletin provides a procedure to replace the fuel feed line if found the cause of the failure which set the DTC.
19-NA-2182023-02-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; ENGINE AND ENGINE COOLING. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine.
22-NA-0872023-01-25. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to replace the fuel injector and the wiring harness to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated with DTC P0201, P0202, P0203, P0204, P0205, P0206 and/or P0216 Set.
21-NA-0812023-01-25. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to locate a possible short in the engine wiring harness.
22-NA-1152023-01-25. 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.
N2123551402023-01-24. 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.
21-NA-1242023-01-06. 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-0732023-01-06. 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-3382023-01-05. 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.
21-NA-1492022-12-15. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing.
22-NA-2162022-12-06. 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-1682022-12-06. 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-1382022-12-06. 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.
22-NA-0742022-12-03. 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-2712022-12-03. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin advises the technician of a possible coolant hose that might be kinked causing the customers concern.
18-NA-3612022-12-03. 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.

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