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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.

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Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
20NA2382021-02-01. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. This service bulletin provides V153 radio software update information to correct customer concerns of various software issues.
20NA2372021-02-01. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT. This service bulletin provides V152 radio software update information to correct customer concerns of various software issues.
20NA2352021-02-01. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This service bulletin provides information to aid a dealer/customer concern of Radio Unwanted Phantom Touch or Non-Responsive to Touch After Cleaning/Disinfecting Radio Display.
20NA2282021-02-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); FUEL SYSTEM, GASOLINE; EQUIPMENT. This technical bulletin provides a procedure to replace the fuel filter and perform a filter life procedure if found the reason for a failed fuel filter life reset during ECM transfer of data.
20NA2192021-02-01. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY; EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of a gurgle or sloshing noise heard coming from the front sunroof drain hose areas.
20NA1142021-02-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This informational bulletin provides information for dealers/technicians on the false setting of DTC U0212.
19NA2182021-02-01. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE AND ENGINE COOLING. This technical bulletin provides a service procedure to correct a condition of Ticking Noise from the Engine.
18NA3062021-02-01. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
17NA1662021-02-01. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. This technical bulletin provides a procedure to measure vibration and install engine mounts to correct a Rough Idle in Drive concern.
N2023155102021-02-01. Service bulletin. EQUIPMENT. Customer Satisfaction Program - vehicles may have a condition in which the trailering label has zeroedout information on the label. Information such as Gross Combined Weight Rating (GCWR), Conventional Trailering Weight Rating(TWR) and Max Tongue Weight may show a zero instead of the proper amounts. Install the updated label. Because this label can easily be installed by the customer, and to reduce their inconvenience,labels and installation instructions will be mailed to customers of record.
N202319660 012021-02-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Service Update. Certain vehicles may present a broken engine valve spring. This may cause the engine to run rough, an engine knocking or ticking noise, a check engine light illumination, or a possible vehicle stall. Dealers are to perform the inspection procedure contained within this bulletin.
N202310850 022021-02-01. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Customer Satisfaction Program (Revised Service Procedure and Part Ordering Information). In certain vehicles, driver movement can disrupt the electrical connection to the seat-mounted inboard airbag system. This airbag system is supplemental and not required equipment under applicable Federal Motor Vehicle Safety Standards. If this occurs, the vehicle?s driver information center will display a ?Service Restraints System? message to the driver before resistance at the connection will prevent the deployment of the airbag. Dealers are to verify the DTC B14DC is present and replace the affected driver inboard side seat wiring harness connector assembly as necessary.
N202310850 012021-02-01. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; AIR BAGS; EQUIPMENT. Customer Satisfaction Program (Revised Correction, Service Procedure and Warranty Information). In certain vehicles, driver movement can disrupt the electrical connection to the seat-mounted inboard airbag system. This airbag system is supplemental and not required equipment under applicable Federal Motor Vehicle Safety Standards. If this occurs, the vehicle?s driver information center will display a ?Service Restraints System? message to the driver before resistance at the connection will prevent the deployment of the airbag. Dealers are to verify the DTC B14DC is present and replace the affected driver inboard side seat wiring harness connector assembly as necessary.
N2023108502021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; AIR BAGS. Customer Satisfaction Program. In certain vehicles, driver movement can disrupt the electrical connection to the seat-mounted inboard airbag system. This airbag system is supplemental and not required equipment under applicable Federal Motor Vehicle Safety Standards. If this occurs, the vehicle?s driver information center will display a ?Service Restraints System? message to the driver before resistance at the connection will prevent the deployment of the airbag. Dealers are to verify the DTC B14DC is present and replace the affected driver inboard side seat wiring harness connector assembly as necessary.
PIT5799A2021-01-25. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary information communicates a cocnern where a flashing spot can intermittently show up on the radio display while in reverse. The PI advises that engineering is investigating the concern.
PIC64232021-01-25. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI. This Preliminary Information communication requests information from the technician about vehicles that may have Bluetooth or phone projection issues. Dealer should request as much information from the customer on the concern as possible and fill in the questionaire.
N2023173902020-12-21. Service bulletin. EQUIPMENT; SERVICE BRAKES; ELECTRICAL SYSTEM. Customer Satisfaction Program (Programming Suspended/Resumed) - Certain vehicles may have a condition in which the brake system control module (BSCM) may set and latch an internal fault in the module?s on-board diagnostics (OBD) buffer. When the fault is present, no malfunction indicator lamp (MIL) is illuminated and there is no driver information center (DIC) message. If an over the air (OTA) software update is pushed to an OBD module and the customer accepts it through the Infotainment system, the update will fail because the presence of the active fault will block the OTA update. The customer may notice that the OTA update has failed with an error message on the DIC. This fault is not visible through dealer tools. Dealers are to reprogram the BSCM.
N2023155102020-12-21. Service bulletin. EQUIPMENT; STRUCTURE. Customer Satisfaction program. Certain vehicles may have a condition in which the trailering label has zeroed out information on the label. Information such as Gross Combined Weight Rating (GCWR), Conventional Trailering Weight Rating (TWR) and Max Tongue Weight may show a zero instead of the proper amounts. Install the updated label. Because this label can easily be installed by the customer, and to reduce their inconvenience, labels and installation instructions will be mailed to customers of record.
PIE0592A2020-12-21. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards one or more camera views showing, intermittent behavior and/or totally inoperative.
990851001E2020-12-21. Service bulletin. EQUIPMENT; STRUCTURE. Thins informational bulletin provides information on Paint-less Dent Repair Process.
000310002L2020-12-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; WHEELS. This service bulletin provides information on Chemical Staining, Pitting, Corrosion and/or Spotted Appearance of Chromed Aluminum Wheels.
20NA2192020-12-21. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY; EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of a gurgle or sloshing noise heard coming from the front sunroof drain hose areas.
20NA1232020-12-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides repair information to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated with DTCs U1961, U1983 setting.
20NA0782020-12-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN:CLUTCH ASSEMBLY; EQUIPMENT. This technical bulletin provides a procedure to replace the 4 5 6 clutch housing if the bushing was found worn and the cause of the customers concern.
18NA2632020-12-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provide policy information for variable diagnostic time allowances on select labor operations (U.S. Only).

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