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: Electrical system are shown. Show all
| PIT5759D | 2020-10-19. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates an issue with the SIR MIL turning on and DTC B14DC setting. Engineering is root causing the concern. |
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| 20NA157 | 2020-09-28. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF. |
| PIT5762A | 2020-09-14. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; EQUIPMENT. This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues with modules Engineering is working on a fix |
| PIT5764 | 2020-09-14. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; EQUIPMENT. This Preliminary information communicates how to shift the transmission into neutral for various service procedures. |
| PIT5762 | 2020-09-14. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues with modules Engineering is working on a fix |
| PIP5733A | 2020-08-10. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation |
| PIT5758 | 2020-08-10. 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.