2021 Chevrolet Suburban fuel/propulsion system problems
22 owner complaints filed with NHTSA name the fuel/propulsion system on the 2021 Chevrolet Suburban — 12% of all complaints for this model year.
What owners report
“Pulled out in 4 lane traffic. Got almost to 55mph. Vehicle lost all power, slowed down and auto shifted to neutral, vehicle stopped and went to park. Vehicle would not start back nor transition to Neutral to remove from highways. 2021 suburban with just 35,000miles. Shut down a lane on a 55mph…”
filed Jul 26, 2026
“Vehicle stalled during routine driving. Code P129F. I was stranded in 95 degree weather with three small children. Please correct and advise ASAP. Had to be towed home. Vehicle inoperable.”
filed May 31, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other Suburban years
| Year | Reports | Share |
|---|---|---|
| 2024 Suburban | 2 | 5% |
| 2023 Suburban | 6 | 5% |
| 2022 Suburban | 11 | 10% |
| 2020 Suburban | 3 | 7% |
| 2018 Suburban | 3 | 4% |
| 2017 Suburban | 4 | 3% |
| 2016 Suburban | 4 | 2% |
| 2015 Suburban | 26 | 6% |
| 2014 Suburban | 2 | 3% |
| 2013 Suburban | 5 | 4% |
| 2012 Suburban | 1 | 1% |
| 2011 Suburban | 4 | 3% |
Other reported problem areas on the 2021 Chevrolet Suburban
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.