2021 Chevrolet Onix: common problems
The maker issued 54 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 54
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Equipment | 0 | 0 | 24 |
| Engine and cooling | 0 | 0 | 17 |
| Electrical system | 0 | 0 | 10 |
| Wheels | 0 | 0 | 9 |
| Powertrain | 0 | 0 | 7 |
| Tires | 0 | 0 | 4 |
| Structure | 0 | 0 | 3 |
| Exterior lighting | 0 | 0 | 2 |
| Fuel system | 0 | 0 | 1 |
| Steering | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
| Visibility | 0 | 0 | 1 |
| Other | 0 | 0 | 3 |
What to check before buying
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Wheels. Wheel runout, cracks, signs of a wheel strike.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This service bulletin describes the U.S
Dealer Special Tool Loan Program process.
- This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the…
This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the GM Technical Assistance Center (TAC).
- This service bulletin provides information to dealership personnel on automatic transmission shift and…
This service bulletin provides information to dealership personnel on automatic transmission shift and engine driveability concerns and/or MIL ON due to aftermarket oil bath air filter use.
- This service bulletin provides information for dealers/technicians on When and How to Submit a Field…
This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only).
- This service bulletin provides information on some vehicles that may rock or move slightly forward or…
This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a…
- This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced…
This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
- This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are…
This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel).
- This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and…
This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
- This service bulletin provides information about the Hunter wheel Road Force balancers that should be…
This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
- This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer…
This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
- This bulletin provides information on Warranty Administration â Required Operating Procedures - 8 Points…
- This preliminary informational (PI) bulletin provides information to dealership personnel which may be…
This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
NHTSA lists 54 bulletins for this year; the 12 newest are shown here.
Questions and answers
What are the most common problems with the 2021 Chevrolet Onix?
There are no owner complaints in the NHTSA data for this year; the data comes from 54 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2021 Chevrolet Onix?
NHTSA lists 54 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2021 Chevrolet Onix from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2021 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.