2020 GMC Yukon problems and complaints
Owners have filed 37 complaints with NHTSA about the 2020 GMC Yukon. The most-reported areas: Power Train (15), Engine (12), Service Brakes (3).
Key takeaways
- 37 owner complaints on file with NHTSA.
- 0 involve a crash, 0 a fire, 0 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Power Train | 15 | 41% |
| Engine | 12 | 32% |
| Service Brakes | 3 | 8% |
| Unknown Or Other | 3 | 8% |
| Electrical System | 2 | 5% |
| Wheels | 1 | 3% |
| Forward Collision Avoidance | 1 | 3% |
| Engine And Engine Cooling | 1 | 3% |
| Fuel System | 1 | 3% |
| Gasoline | 1 | 3% |
| Fuel/Propulsion System | 1 | 3% |
| Tires | 1 | 3% |
One complaint can name several components, so shares add up to more than 100%.
Parts for the 2020 GMC Yukon
GarageDex's verified specs for this car. Each Buy button searches Amazon for that exact part.
- Battery
- Engine oil
- Oil filter
- Engine air filter
- Cabin air filter
- Wiper blades
- Headlight bulb
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| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2020 GMC Yukon SUV 4WD | 4/5 | 4/5 | 5/5 | 3/5 |
| 2020 GMC Yukon SUV RWD | 4/5 | 4/5 | 5/5 | 3/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Power Train - filed 2026-10-16
We have 42000 miles on this truck and bought 1 year old. Unit has been maintained well and looks new. Recently had the 10 speed transmissions fluid changed under normal maintenance. It was not burnt, turning more burgundy and dealer said it was a good and proper choice. Afterwards we noted a shudder and thought the...
Engine - filed 2026-08-27
Engine failure due main bearing and rod failure. Engine had heavy knocking.
Engine - filed 2026-08-23
We just purchased our Yukon from a dealership in February (2/7/26) and it was diagnosed with premature failure of at least one AFM valve lifter as it is causing engine misfires, shaking and stalling on 7/30/26. We just hit 67,000 miles on the odometer so we are just beyond the warranty coverage. The lifters were replac...
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More for the 2020 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.