2006 Hummer H3 problems and complaints
Owners have filed 362 complaints with NHTSA about the 2006 Hummer H3. The most-reported areas: Electrical System (96), Engine (52), Structure (36).
Key takeaways
- 362 owner complaints on file with NHTSA.
- 10 involve a crash, 27 a fire, 8 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Electrical System | 96 | 27% |
| Engine | 52 | 14% |
| Structure | 36 | 10% |
| Engine And Engine Cooling | 35 | 10% |
| Visibility | 32 | 9% |
| Suspension | 29 | 8% |
| Visibility/Wiper | 29 | 8% |
| Unknown Or Other | 28 | 8% |
| Power Train | 20 | 6% |
| Service Brakes | 20 | 6% |
| Air Bags | 20 | 6% |
| Hydraulic | 16 | 4% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2006 Hummer H3 4-DR | Not rated | Not rated | Not rated | 3/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Electrical System - filed 2026-07-21
Theses templates dosent recognize the key and kicks on the security system which stops the motor from turning on. So you are stuck for 10 minutes then you can try again all so sometimes the motor tries to turn on by just sticking the key in the ignition before you even turn it. By looking at youtube alot of the H3s a...
Structure,engine And Engine Cooling - filed 2026-01-14
The contact owns a 2006 Hummer H3. The contact stated that the frame was rusted on the driver's side. The check engine warning light was illuminated. The contact looked underneath the vehicle and was able to see through the subframe. The contact also noticed cracks in sub frame. The contact was concerned about driving...
Unknown Or Other,engine - filed 2025-11-11
The blower resistor and harness needs replaced it looks like it caught fire or default
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More for the 2006 Hummer H3
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.