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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

Bulletins, newest first
25-NA-0522025-04-10. Service bulletin. ENGINE. This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.
PIE0820A2025-04-09. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the power sliding console being inoperative.
PIE0812A2025-04-09. Service bulletin. ENGINE. This engineering information (EI) closure ends the need for gathering further information from technicians in regard to the vehicle having loss of power and/or having the MIL illuminated on DIC.
PIT5851F2025-04-07. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issues with the odometer being incorrect after a programming event and how the dealership can resolve the issue.
PIT6110E2025-04-01. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.
24-NA-0992025-03-14. Service bulletin. STRUCTURE:BODY; SUSPENSION. This bulletin provides a service procedure to replace the sway bar bracket retainers if found the cause of the clunking noise from front of vehicle.
PIT5993D2025-03-12. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with high resistance in the glass breakage loop that could cause a dead battery or unwanted theft alarm. Dealers are to inspect the glass breakage loop.
17-NA-0732025-03-12. Service bulletin. UNKNOWN OR OTHER. This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
05-03-07-009L2025-03-08. Service bulletin. SUSPENSION; WHEELS. This service bulletin provides information on Wheel Alignment Specifications, Requirements and Recommendations for GM Vehicles.
11-00-89-005Y2025-03-08. Service bulletin. UNKNOWN OR OTHER. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
05-08-51-001L2025-03-08. Service bulletin. STRUCTURE:BODY. This informational bulletin provides a procedure on how to remove the paint stain that may present itself under the shipping film.
PIE08202025-03-07. Service bulletin. STRUCTURE:BODY. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the power sliding console being inoperative.
PIT5981B2025-03-02. Service bulletin. SUSPENSION. This Preliminary information communicates a tip when diagnosing an inoperative air leveling suspension system and to repair any loss of comm DTC's with the power window motors first.
PIT6144F2025-03-02. Service bulletin. SUSPENSION. This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 SYM 92 caused by a pinched air inlet hose to the suspension compressor air leveling system or internal issue with compressor assembly.
25-NA-0322025-02-28. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This bulletin provides information to the tech on how to diagnosis the EGR system from possible issue that may cause the DTCs to set and cause the customers concern of a MIL Illuminated.
16-NA-1092025-02-28. Service bulletin. STEERING. This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.
24-NA-2642025-02-27. Service bulletin. POWER TRAIN. This bulletin helps aid the tech in possible noise that may be normal or abnormal depending on the concern noted.
07-00-89-037V2025-02-27. Service bulletin. UNKNOWN OR OTHER. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
PIT63442025-02-25. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with blower motor speed changing when air flow is blocked by snow.
PIT5734H2025-02-25. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with poor heater performance and advises dealerships to inspect the heater core inlet and outlet hoses for being twisted or kinked.
PIT5551Q2025-02-25. Service bulletin. UNKNOWN OR OTHER. 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".
PIT6276A2025-02-25. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issues with a service keyless entry message caused by aftermarket door handle covers and they should be removed.
PIP6008D2025-02-25. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates a possible retainer ring dis-lodged for a DTC P2714, may not have reverse as well.
PIT6144E2025-02-18. Service bulletin. SUSPENSION. This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 SYM 92 caused by a pinched air inlet hose to the suspension compressor air leveling system or internal issue with compressor assembly.
PIT6132B2025-02-18. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issues with the HVAC making a hum buzz noise when the blower is set to a higher speed. Engineering is working on a new HVAC door seal material to correct the noise.

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