2021 Chevrolet Colorado electrical system problems
11 owner complaints filed with NHTSA name the electrical system on the 2021 Chevrolet Colorado — 16% of all complaints for this model year.
What owners report
“Brake vacum pump experienced a catastrophic failure. I was unable to step on the break because the break pedal was hard. I ran thru a red light. I was told the brake vacume pump shattered & pieces of metal went into my engine”
filed Jul 29, 2026
“I am reporting a serious safety defect involving my 2021 Chevrolet vehicle. While driving, multiple warnings appeared including “Service Power Steering,” “Steering Assist is Reduced,” “Service ESC,” and “Service Battery Charging System.” The vehicle then lost steering assist, braking performance…”
filed May 29, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Colorado years
| Year | Reports | Share |
|---|---|---|
| 2025 Colorado | 7 | 26% |
| 2024 Colorado | 34 | 30% |
| 2023 Colorado | 39 | 30% |
| 2022 Colorado | 19 | 39% |
| 2020 Colorado | 6 | 8% |
| 2019 Colorado | 24 | 17% |
| 2018 Colorado | 34 | 19% |
| 2017 Colorado | 41 | 19% |
| 2016 Colorado | 113 | 16% |
| 2015 Colorado | 52 | 11% |
| 2012 Colorado | 8 | 19% |
| 2011 Colorado | 14 | 33% |
Other reported problem areas on the 2021 Chevrolet Colorado
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.