AI Damage2009 Hummer H3: common problems
Owners of the 2009 Hummer H3 filed 69 complaints with NHTSA, most often about electrical system and visibility. Details by component below, with sources.
Key figures
- Owner complaints
- 69
- involving a crash
- 2
What fails most often
- 1 Electrical system 49% of all complaints
- 2 Visibility 16% of all complaints
- 3 Engine 13% of all complaints
- 4 Air bags 12% of all complaints
- 5 Structure 12% of all complaints
- 6 Electronic stability control 6% of all complaints
- 7 Service brakes 4% of all complaints
- 8 Powertrain 3% of all complaints
- Electrical system: 34 complaints (49% of all).
- Visibility: 11 complaints (16% of all).
- Engine: 9 complaints (13% of all).
- Air bags: 8 complaints (12% of all), 1 of them with a crash reported by the owner.
- Structure: 8 complaints (12% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 3.7 L · petrol · 5 cyl
- 5.3 L · petrol · 8 cyl
- automatic, 4-speed
- manual, 5-speed
Drive: AWD
Symptoms owners describe
How many of the 69 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 34 | 0 | 0 |
| Visibility | 11 | 0 | 0 |
| Engine | 9 | 0 | 0 |
| Air bags | 8 | 1 | 0 |
| Structure | 8 | 0 | 0 |
| Electronic stability control | 4 | 0 | 0 |
| Service brakes | 3 | 1 | 0 |
| Powertrain | 2 | 0 | 0 |
| Suspension | 2 | 0 | 0 |
| Engine and cooling | 1 | 0 | 0 |
| Fuel/propulsion system | 1 | 0 | 0 |
| Fuel system | 1 | 0 | 0 |
| Seat belts | 1 | 0 | 0 |
| Seats | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The area in which I reside has been in extreme cold temperatures for three days, 28 below zero in the morning the daytime high 4 below zero. The vehicle has anti lock brakes.
The contact stated that the vehicle failed to immediately start, and the security warning light illuminated. After several attempts, the vehicle was started. The contact stated that the failure was intermittent but had become more frequent. The cause of the failure was not yet determined.
The contact stated that while attempting to start the vehicle, the vehicle failed to start. The contact waited for a while before the vehicle started. The contact stated that the vehicle was slow to start. The contact stated that while her husband was at the store, he waited for 15 minutes before the vehicle started.
I was having the truck inspected per state yearly requirements and when the shop lifted the truck, the bed bent backward. The frame was rusted out on both sides.
Traveling at approximately 35mph on inner city road in my 2009 Hummer H3T, both driver and passenger side curtain airbags deployed without any warning, no collision or accident, system went into crash mode and fired seat belt tensioners. Pictures taken of the exterior conditions and terrain/road conditions.
While driving down the road, warning lights will flash, will beep, (traction control, abs, service 4wd, change oil, service tpm), all the while all things electrical stops working such as headlights, brake lights, blower fan, heated seat, turn signals, and all this while driving down the road at normal speed.
The air bag light stays on after the vehicle is in motion causing a potentially dangerous incident. Also hairline cracking in the radiator due to the plastic top of the radiator tank rubbing on the vehicles frame.
They deployed for no reason and no airbag light or warning was given. Not understanding how they would deploy without a crash or some type of vehicle damage had occurred. Major safety issue. Now what to do? No recall? Ive seen many complaints about this happening in the 2009 hummer h3.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 4,461 of 36,656 model years in the NHTSA data (top 12% most complained about).
On average one model year of the H3 has 132 complaints (6 years in the data). This year has 69, below average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
Other years of this model
Questions and answers
What are the most common problems with the 2009 Hummer H3?
Owner complaints to NHTSA most often mention: electrical system, visibility, engine. Total complaints: 69. The most frequent symptoms in complaint texts: won't start (16%), A/C or heater (9%), smoke, burning smell, fire (7%).
How many service bulletins (TSB) were issued for the 2009 Hummer H3?
NHTSA lists 0 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 2009 Hummer H3 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 2009 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 2026-11-05.