2021 Chevrolet Suburban problems and complaints
Owners have filed 200 complaints with NHTSA about the 2021 Chevrolet Suburban. The most-reported areas: Engine (87), Power Train (37), Fuel/Propulsion System (22).
Key takeaways
- 200 owner complaints on file with NHTSA.
- 6 involve a crash, 1 a fire, 5 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Engine | 87 | 44% |
| Power Train | 37 | 19% |
| Fuel/Propulsion System | 22 | 11% |
| Electrical System | 19 | 10% |
| Unknown Or Other | 13 | 7% |
| Engine And Engine Cooling | 11 | 6% |
| Forward Collision Avoidance | 11 | 6% |
| Fuel System | 10 | 5% |
| Gasoline | 9 | 5% |
| Service Brakes | 9 | 5% |
| Exterior Lighting | 7 | 4% |
| Seat Belts | 7 | 4% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2021 Chevrolet Suburban SUV 4WD | 4/5 | 4/5 | 5/5 | 3/5 |
| 2021 Chevrolet Suburban SUV 2WD | 4/5 | 4/5 | 5/5 | 3/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Engine And Engine Cooling - filed 2026-10-13
The contact owns a 2021 Chevrolet Suburban. The contact stated that while driving at 55 MPH, the vehicle shuddered and shut off completely without warning. An attempt was made to restart the vehicle, but the engine failed to restart. The vehicle was towed to a dealer, where a diagnostic inspection revealed a lifter fai...
Power Train,engine - filed 2026-10-06
Cylinders were misfiring and lifters had to be completely replaced along with pushrod and camshaft. This cost me $7018.64 to fix out of my own pocket. Received the vehicle back, and there was a slight ticking sound that was new to me. Scheduled to bring the vehicle back in and 2 days before I was scheduled to go in and...
Engine And Engine Cooling - filed 2026-09-23
The contact owns a 2021 Chevrolet Suburban. The contact stated that while driving 20 MPH, the vehicle lost motive power with the check engine warning light flashing. There was a rumbling sound coming from the vehicle, and the vehicle started shaking. The contact was able to coast the vehicle to the side of the road. Th...
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More for the 2021 Chevrolet Suburban
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.