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
| N212333800 | 2021-08-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ELECTRICAL SYSTEM. Emission Recall. General Motors has decided to conduct a voluntary emissions recall involving certain vehicles equipped with a performance air intake system (LPO RVK or 5W7). The Engine Control Module (ECM) may not have been programmed with the calibrations appropriate for the performance air intake system installed on the engine in these vehicles. Dealers will reprogram the ECM. |
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| PIE0643 | 2021-08-09. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Malfunction Indicator Lamp (MIL) illuminated on Driver Information Center (DIC). |
| PIE0625A | 2021-08-09. Service bulletin. EXTERIOR LIGHTING:TURN SIGNAL. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards on a turn signal not canceling and/or mis-canceling. |
| PIE0624A | 2021-08-09. Service bulletin. ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES:HATCHBACK/LIFTGATE:LOCK. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Liftgate Ajar Lamp illuminated on Driver Information Center (DIC) with the Liftgate being closed. |
| 990420002L | 2021-08-09. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation. |
| 110089002E | 2021-08-09. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This service bulletin provides information on GM Accessories ? Dealer-Installed, Repaired or Replaced During Warranty Coverage Period. |
| 080730035E | 2021-08-09. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid. |
| 010842001N | 2021-08-09. Service bulletin. EXTERIOR LIGHTING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines. |
| 21NA152 | 2021-08-09. Service bulletin. VISIBILITY:GLASS, SIDE/REAR; EQUIPMENT. This service bulletin provides information for dealers/technicians on glass ultraviolet (UV) Ray protection and tint percentage. |
| 21NA135 | 2021-08-09. Service bulletin. COMMUNICATION: VEHICLE TO INFRASTRUCTURE. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content. |
| 21NA132 | 2021-08-09. Service bulletin. 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. |
| 21NA131 | 2021-08-09. Service bulletin. SEATS:FRONT ASSEMBLY:POWER ADJUST; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of Memory Seat Module Does Not Adjust. |
| 21NA129 | 2021-08-09. Service bulletin. SEATS; LATCHES/LOCKS/LINKAGES. This technical bulletin provides repair information to correct a customer concern of rear seat (60 Percent) and/or (40 Percent) chucking movement, and noise is present at rear latch to striker. |
| 21NA126 | 2021-08-09. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Rear Access Open Message Illuminated in DIC when Liftgate is Closed. |
| 21NA119 | 2021-08-09. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. This technical bulletin provides repair information to correct a customer concern of Tire Pressure Monitor System Sensors Display Dashes with Trailer Connected. |
| 21NA095 | 2021-08-09. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This technical bulletin provides a procedure to seal the exhaust at the UFSCR and Tailpipe flange. |
| PIE0639 | 2021-08-09. Service bulletin. LANE DEPARTURE; 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 to one or more camera views showing intermittent behavior and/or totally inoperable. |
| PIE0638 | 2021-08-09. Service bulletin. FORWARD COLLISION AVOIDANCE; LANE DEPARTURE. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to having a No Start, Forward Collision Alert, Adaptive Cruise Control and/or Lane Keep Assist Inoperable condition. |
| PIE0637 | 2021-08-09. Service bulletin. ENGINE. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to one or more of the following condition Stalls, Crank with no star, Check Engine Lamp illuminated on the Driver Information Center (DIC). |
| PIE0634 | 2021-08-09. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to concerns with the front center floor power console function and/or appearance issues. |
| PIE0632 | 2021-08-09. Service bulletin. EQUIPMENT. This engineering information (EI) requests dealership personnel involve GM Engineering in the event an Owner is in Receipt of a PAI (Proactive Alert Identifier) "SAC003" and/or the Dealer is informed of excessive Parasitic Drains on an in-inventory vehicle. |
| PIE0623 | 2021-08-09. Service bulletin. ELECTRICAL SYSTEM. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Malfunction Indicator Lamp illuminated on the Driver Information Center (DIC). |
| PIE0595A | 2021-08-09. Service bulletin. STRUCTURE. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to paint concerns with the front and/or rear fascias. |
| 100089006H | 2021-08-09. Service bulletin. EQUIPMENT. This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only). |
| 070089037Q | 2021-08-09. Service bulletin. EQUIPMENT. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.