Problems · NHTSA complaints
2003 Hummer H3 problems
Owners filed 2 complaints about the 2003 Hummer H3 with NHTSA between Nov 2012 and Aug 2017. The most-cited component is electrical system (2).
Complaints
2
Filed with NHTSA
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Electrical system2
- Vehicle speed control1
- Visibility1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 10, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
1
0
0
0
0
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2012 | 1 |
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 0 |
| 2017 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Electrical system
2 reports
“THE DASH CLUSTER IS NOT WORKING NO GAUGES OR SPEED ODOMETER”
Vehicle speed control
1 report
Visibility
1 report
“HEATER RELAY GONE 2 TIMES. *TR”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.