2021 Chevrolet Suburban engine problems
76 owner complaints filed with NHTSA name the engine on the 2021 Chevrolet Suburban — 42% of all complaints for this model year.
What owners report
“The contact owns a 2021 Chevrolet Suburban used to tow a 30-foot trailer. The contact stated that while towing the trailer and driving 60 MPH up an incline with no shoulder, the vehicle shut off in a remote area. The contact was able to move the vehicle off the roadway. There were no warning lights…”
filed Jul 31, 2026
“I had a recall serviced on a Friday which was completed by the dealership. My car sat all weekend and was not driven until Monday AM which was fine. After work, there were several warning lights that popped up and it was making a terrible noise. I was unable to drive home and had to have my car…”
filed Jul 7, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Connecting rod and/or crankshaft engine components may have manufacturing defects that…Campaign 25V274000 · Apr 24, 2025
Related service bulletins
Certain vehicles may have a condition that could cause the cylinder 2 glow plug to fail. If this failure occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate and a diagnostic trouble code will…
N262552620 · Service Campaign · issued May 11, 2026
Engine problems in other Suburban years
| Year | Reports | Share |
|---|---|---|
| 2024 Suburban | 18 | 49% |
| 2023 Suburban | 59 | 52% |
| 2022 Suburban | 52 | 49% |
| 2020 Suburban | 15 | 36% |
| 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 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.