2021 Chevrolet Trailblazer fuel/propulsion system problems
16 owner complaints filed with NHTSA name the fuel/propulsion system on the 2021 Chevrolet Trailblazer — 8% of all complaints for this model year.
What owners report
“Vehicle Diagnostic Summary – Trouble Codes Explained 1. P0562 – System Voltage Low The vehicle’s electrical system is running at low voltage. This could be due to a weak battery, a failing alternator, or poor electrical connections. It may cause various electronic issues and unexpected shutdowns if…”
filed Jul 24, 2025
“Month of June of 2024 I purchased 2021 Chevrolet Trailblazer LT with 31k miles on the odometer I had to service my vehicle and had to replace the fuel pump, took weeks to get in due to the strike that took place, Chevrolet will not back behind their employees nor their consumers. They only honored…”
filed Jun 12, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other Trailblazer years
| Year | Reports | Share |
|---|---|---|
| 2023 Trailblazer | 3 | 5% |
| 2022 Trailblazer | 5 | 5% |
| 2009 Trailblazer | 1 | 4% |
| 2008 Trailblazer | 5 | 3% |
| 2007 Trailblazer | 58 | 8% |
| 2006 Trailblazer | 76 | 7% |
| 2005 Trailblazer | 95 | 6% |
| 2004 Trailblazer | 43 | 4% |
| 2003 Trailblazer | 55 | 6% |
| 2002 Trailblazer | 23 | 2% |
| 2000 Trailblazer | 2 | 8% |
Other reported problem areas on the 2021 Chevrolet Trailblazer
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.