AI Damage2006 Hummer H2: common problems
Owners of the 2006 Hummer H2 filed 22 complaints with NHTSA, most often about electrical system and service brakes. Details by component below, with sources.
Key figures
- Owner complaints
- 22
- involving a crash
- 3
What fails most often
- 1 Electrical system 18% of all complaints
- 2 Service brakes 18% of all complaints
- 3 Suspension 18% of all complaints
- 4 Engine 14% of all complaints
- 5 Steering 14% of all complaints
- 6 Air bags 9% of all complaints
- 7 Engine and cooling 9% of all complaints
- 8 Powertrain 9% of all complaints
- Electrical system: 4 complaints (18% of all).
- Service brakes: 4 complaints (18% of all).
- Suspension: 4 complaints (18% of all), 1 of them with a crash reported by the owner.
- Engine: 3 complaints (14% of all).
- Steering: 3 complaints (14% of all).
Symptoms owners describe
How many of the 22 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 | 4 | 0 | 0 |
| Service brakes | 4 | 0 | 0 |
| Suspension | 4 | 1 | 0 |
| Engine | 3 | 0 | 0 |
| Steering | 3 | 0 | 0 |
| Air bags | 2 | 2 | 0 |
| Engine and cooling | 2 | 0 | 0 |
| Powertrain | 2 | 0 | 0 |
| Seats | 2 | 0 | 0 |
| Visibility | 2 | 0 | 0 |
| Equipment | 1 | 1 | 0 |
| Fuel system | 1 | 0 | 0 |
| Seat belts | 1 | 0 | 0 |
| Wheels | 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 air bags failed to deploy. The contact sustained injuries to the left arm and chest. A police report was filed at the scene. The vehicle was not inspected to determine the cause of the air bag deployment failure. The manufacturer was not notified. The failure mileage was 40,000.
Tl contact owns a 2006 hummer h2t. While driving at approximately 45 mph, the vehicle was hit by another vehicle on the front driver side. None of the air bags deployed and the on-star system did not activate.
Tl contact owns a 2006 gmc hummer h2. While driving 55 mph, the contact lost control of the vehicle and drove into a canal. The tow mechanic stated that the lower ball joint snapped and caused the failure. The driver and passenger sustained scratches from the crash. A police report was filed.
The contact stated that upon activation, the A/C and the heating systems were intermittently inoperable. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the blower motor wiring harness needed to be replaced. The vehicle was not repaired.
The contact stated while driving at undisclosed speeds with the A/C activated, the contact became aware of an abnormal burning electrical odor. No warning lights were illuminated.
The other day I took a ride in my truck and upon driving approximately two blocks from my home the steering control of the car totally failed. Imagine driving your car and at some point, you lose the capability of controlling your cars direction while holding your steering wheel.
Salesman mr lawrence said that they could not sell a vehicle with seat belts that did not work the drivers side rear was not repaired as stated. I took delivery of the used vehicle 2-18-19 at 0800 approximately
Exhaust bolts broken , leaking exhaust fumes into vehicle , engine fire ???? City driving
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 7,904 of 36,656 model years in the NHTSA data (top 22% most complained about).
On average one model year of the H2 has 40 complaints (8 years in the data). This year has 22, below average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Suspension. Wheel alignment, control arms, subframe, even tire wear.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Other years of this model
Questions and answers
What are the most common problems with the 2006 Hummer H2?
Owner complaints to NHTSA most often mention: electrical system, service brakes, suspension. Total complaints: 22. The most frequent symptoms in complaint texts: A/C or heater (9%), rust, corrosion (9%), smoke, burning smell, fire (9%).
How many service bulletins (TSB) were issued for the 2006 Hummer H2?
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 2006 Hummer H2 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 2006 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.