2021 Chevrolet Suburban power train problems
35 owner complaints filed with NHTSA name the power train on the 2021 Chevrolet Suburban — 19% of all complaints for this model year.
What owners report
“What component or system failed or malfunctioned, and is it available for inspection upon request? (On our 2021 gasoline suburgan, the rear wheels locked up at free-way speeds, which nearly caused a possibly fatal accident. The lock released but it appears the strain caused rear differential gear…”
filed Jul 15, 2026
“COMPONENT: The 10-speed automatic transmission failed on 6/29/26, locking the vehicle completely in neutral. The neutral override could not be disengaged even by dealership technicians. Vehicle is currently at [XXX] Chevrolet, [XXX] and is available for inspection. SAFETY RISK: I have 3 young…”
filed Jul 13, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Transmission control valve may fail and cause the rear wheels to lock-upCampaign 24V797000 · Oct 24, 2024
- Rear wheel driveshaft assemblies may have internal components that were not heat-treated…Campaign 22V036000 · Jan 27, 2022
Power Train problems in other Suburban years
| Year | Reports | Share |
|---|---|---|
| 2024 Suburban | 7 | 19% |
| 2023 Suburban | 12 | 11% |
| 2022 Suburban | 29 | 27% |
| 2020 Suburban | 10 | 24% |
| 2019 Suburban | 38 | 50% |
| 2018 Suburban | 17 | 21% |
| 2017 Suburban | 38 | 27% |
| 2016 Suburban | 44 | 20% |
| 2015 Suburban | 47 | 11% |
| 2014 Suburban | 5 | 8% |
| 2013 Suburban | 6 | 5% |
| 2012 Suburban | 5 | 5% |
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.