AI Damage2007 Hummer H3: common problems
Owners of the 2007 Hummer H3 filed 238 complaints with NHTSA, most often about electrical system and engine. Details by component below, with sources.
Key figures
- Owner complaints
- 238
- involving a crash
- 12
What fails most often
- 1 Electrical system 32% of all complaints
- 2 Engine 18% of all complaints
- 3 Visibility 18% of all complaints
- 4 Structure 9% of all complaints
- 5 Air bags 8% of all complaints
- 6 Powertrain 8% of all complaints
- 7 Engine and cooling 5% of all complaints
- 8 Electronic stability control 5% of all complaints
- Electrical system: 76 complaints (32% of all), 1 of them with a crash reported by the owner.
- Engine: 44 complaints (18% of all), 1 of them with a crash reported by the owner.
- Visibility: 42 complaints (18% of all).
- Structure: 22 complaints (9% of all), 1 of them with a crash reported by the owner.
- Air bags: 19 complaints (8% of all), 9 of them with a crash reported by the owner.
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
- automatic, 4-speed
- manual, 5-speed
Drive: AWD
Symptoms owners describe
How many of the 238 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 | 76 | 1 | 0 |
| Engine | 44 | 1 | 0 |
| Visibility | 42 | 0 | 0 |
| Structure | 22 | 1 | 0 |
| Air bags | 19 | 9 | 0 |
| Powertrain | 19 | 0 | 0 |
| Engine and cooling | 13 | 0 | 0 |
| Electronic stability control | 12 | 1 | 0 |
| Fuel/propulsion system | 11 | 0 | 0 |
| Service brakes | 11 | 2 | 0 |
| Equipment | 8 | 0 | 0 |
| Suspension | 6 | 2 | 0 |
| Steering | 5 | 1 | 0 |
| Seats | 4 | 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.
Takata recall air bags did not deploy when driving 75mph speed limit on rural hwy. It was real dark hard to see and I come up on the curve per eyewitnesses stated I was going just fine then all sudden went dwn into the ditch head first back rt tire blew off then vehicle started flipping a total of 8x..hit front hummer…
My airbags did not deploy after 8x something shld had worked. But they didnt now im in bad shape. I need help. Thpse airbags shld had deployed but did not now im suffering cuz no doctor will see me without an atty. Thank you. Iwas driving hm on new hwy. Doing speed limit of 75. Had the airbags deployed as they shld.
The air bags did not deploy. A police report was filed and the contact sustained back and hip injuries, which required medical attention. The vehicle was destroyed and towed to a tow lot. The manufacturer was not notified of the failure. The failure mileage was approximately 120,000.
Abs fault , traction failed, stab system my car started driving funny and I almost lost control
Everything from: electrical, air condition, stabilitrack system, which cost me over $600.00 still not working properly. Leakingsun roof censors, I was made to pay for that still dont work. I paid over $8,000.00, or more.
The contact stated that while the vehicle was parked, the AC was turned on, and the contact became aware of smoke entering the cabin of the vehicle. The smoke was coming from the front passenger's side underneath the dashboard. The AC was turned off, and the smoke ceased.
The problem was unknown to me and probably would be to any vehicle owner that is not a mechanic. I was driving a death trap and didn't know how easily it could have been a serious problem.
I have the well known issue with the passkey security system. Nothing is wrong mechanically with the car but the security system will not allow the truck to start, therefore leaving me randomly leaving me stranded. Much has been documented on this issue, yet gm has never done a recall.
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 1,703 of 36,656 model years in the NHTSA data (top 5% most complained about).
On average one model year of the H3 has 132 complaints (6 years in the data). This year has 238, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
Other years of this model
Questions and answers
What are the most common problems with the 2007 Hummer H3?
Owner complaints to NHTSA most often mention: electrical system, engine, visibility. Total complaints: 238. The most frequent symptoms in complaint texts: A/C or heater (15%), won't start (12%), smoke, burning smell, fire (10%).
How many service bulletins (TSB) were issued for the 2007 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 2007 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 2007 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.