2021 GMC Yukon problems and complaints
Owners have filed 337 complaints with NHTSA about the 2021 GMC Yukon. The most-reported areas: Engine (186), Power Train (52), Fuel/Propulsion System (44).
Key takeaways
- 337 owner complaints on file with NHTSA.
- 9 involve a crash, 0 a fire, 9 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Engine | 186 | 55% |
| Power Train | 52 | 15% |
| Fuel/Propulsion System | 44 | 13% |
| Engine And Engine Cooling | 32 | 9% |
| Electrical System | 30 | 9% |
| Unknown Or Other | 22 | 7% |
| Forward Collision Avoidance | 19 | 6% |
| Air Bags | 18 | 5% |
| Fuel System | 12 | 4% |
| Gasoline | 12 | 4% |
| Service Brakes | 11 | 3% |
| Steering | 11 | 3% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2021 GMC Yukon SUV 4WD | 4/5 | 4/5 | 5/5 | 3/5 |
| 2021 GMC Yukon SUV 2WD | 4/5 | 4/5 | 5/5 | 3/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Engine - filed 2026-10-13
In late February / early March 2026, at approximately 139,000 miles, my 2021 GMC Yukon Denali with the 6.2L V8 (L87) engine developed a loud knocking/rattling noise that sounded like a loose part inside the engine. The vehicle kept running, but the noise persisted. I took the vehicle to a GMC dealer. The dealer checked...
Engine - filed 2026-10-09
The contact owns a 2021 GMC Yukon. The contact stated that while driving, the engine started making abnormal sounds. The vehicle was towed to a dealer. The manufacturer was notified of the issue. The dealer confirmed that the vehicle had experienced lifter failure and stated that further diagnostic tests were needed to...
Power Train - filed 2026-10-08
I was driving normally, going up a hill and the car skipped and lurched forward. Then when i touched the gas pedal the car would not accelerate but the rpms would increase. When I was able to pull over, the car would not reverse, the engine would rev when i pushed the gas pedal but it would not move. I drove it dire...
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More for the 2021 GMC Yukon
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.