2020 Chevrolet Suburban engine problems
15 owner complaints filed with NHTSA name the engine on the 2020 Chevrolet Suburban — 36% of all complaints for this model year.
What owners report
“There is a safety recall on GM’s 6.2L V8 L87 engine model years 2021-2024. My vehicle is a 2020 Suburban with a 6.2L V8 L87 engine. My engine recently experienced the same failure as cited in the recall, but because it is outside the 2021-2024 window it is not covered by this recall. I ask that the…”
filed Aug 4, 2026
“The contact owns a 2020 Chevrolet Suburban. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate as intended while depressing the accelerator pedal, and the vehicle stalled. A passerby helped the contact to push the vehicle into a parking lot. There was no…”
filed Mar 9, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Suburban years
| Year | Reports | Share |
|---|---|---|
| 2024 Suburban | 18 | 49% |
| 2023 Suburban | 59 | 52% |
| 2022 Suburban | 52 | 49% |
| 2021 Suburban | 76 | 42% |
| 2019 Suburban | 24 | 32% |
| 2018 Suburban | 18 | 22% |
| 2017 Suburban | 25 | 18% |
| 2016 Suburban | 27 | 12% |
| 2015 Suburban | 39 | 9% |
| 2014 Suburban | 1 | 2% |
| 2013 Suburban | 16 | 14% |
| 2012 Suburban | 12 | 12% |
Other reported problem areas on the 2020 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.