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Service bulletins for the 2021 GMC Yukon XL

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.

1234 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Driver assistance are shown. Show all

Bulletins, newest first
PIT5801A2021-05-17. Service bulletin. ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); SUSPENSION. This Preliminary information communicates an issue with how to properly inspect and ensure the air lines for the air suspension system are fully seated.
PIE0592B2021-05-03. Service bulletin. BACK OVER PREVENTION. 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.
PIT5791A2021-04-19. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; BACK OVER PREVENTION:SOFTWARE. This Preliminary information communicates a condition where the radio may display a :connection not availale, please call OnStar agent". This bulletin advises that Engineering is working on a software solution that will prevent the message from displaying when listening to non-SXM sources, but still allow the message to display when a loss of connectivity exists and the user is attempting to play Sirius XM.
PIT58292021-04-19. Service bulletin. BACK OVER PREVENTION:DISPLAY FUNCTION; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary information communicates a condition where the the customer may see a SD card remove message accompanied by a 0X40000 code on the DIC or radio display. This PI offers some testing tips and advises on direction depending on the tests and procedures outlined in the PI
20NA2332021-03-01. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL:SOFTWARE. This technical bulletin provides repair information to correct a customer concern of Long Range Radar setting DTC U3000 49.
N2023212302021-02-16. Service bulletin. LANE DEPARTURE; FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Service Update. On certain vehicles the clamp may not be properly aligned and positioned on the hose, or the hose is rolled over on the pump port. The improper assembly can quickly develop into a significant leak early in the truck?s life. As the coolant level drops, a Low Coolant Warning or potential for engine overheat with DIC message is possible. Dealers are to inspect for both the vertical and horizontal hose at the auxiliary coolant pump, and repair as needed.
N2023192502021-02-16. Service bulletin. BACK OVER PREVENTION:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Service Update - Certain 2021 vehicles have a condition where, if an over the air (OTA) update was sent to an affected vehicle, the update would fail. Customers will see the update is available, but after accepting and attempting to install, they will receive an update failed message. Dealers will replace the radio.
PIT57652021-02-16. Service bulletin. WHEELS; BACK OVER PREVENTION. This Preliminary information communicates that some customers may comment on a rattle, flutter, flapping, and/or wind type noise from the front end caused by either the left or right front inner wheel well liner having excessive movement.
PIP5748D2021-02-16. Service bulletin. BACK OVER PREVENTION. This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes.
PIT57652021-01-25. Service bulletin. BACK OVER PREVENTION; WHEELS. This Preliminary information communicates that some customers may comment on a rattle, flutter, flapping, and/or wind type noise from the front end caused by either the left or right front inner wheel well liner having excessive movement.
PIP5748D2021-01-25. Service bulletin. BACK OVER PREVENTION. This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes.
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.
PIT5551F2020-11-16. Service bulletin. FORWARD COLLISION AVOIDANCE. This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
PIT57822020-10-19. Service bulletin. ELECTRICAL SYSTEM; BACK OVER PREVENTION. This Preliminary information communicates and issue with programming a replacement side object detection module and engineering is working on the issue.
PIT57582020-08-10. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE. This Preliminary information communicates an issues with front park assist false alerts caused by a software issues. Engineering is working on new software to correct this concern.

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