AI Damage2006 Hummer H2 SUT: common problems
Owners of the 2006 Hummer H2 SUT filed 3 complaints with NHTSA, most often about engine and cooling and electrical system. Details by component below, with sources.
Key figures
- Owner complaints
- 3
What fails most often
- 1 Engine and cooling 67% of all complaints
- 2 Electrical system 33% of all complaints
- 3 Fuel system 33% of all complaints
- 4 Visibility 33% of all complaints
- Engine and cooling: 2 complaints (67% of all).
- Electrical system: 1 complaints (33% of all).
- Fuel system: 1 complaints (33% of all).
- Visibility: 1 complaints (33% of all).
Symptoms owners describe
How many of the 3 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) |
|---|---|---|---|
| Engine and cooling | 2 | 0 | 0 |
| Electrical system | 1 | 0 | 0 |
| Fuel system | 1 | 0 | 0 |
| Visibility | 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.
Check engine light came on and wouldn't go out. Took it to the garage and they pulled up the code po442, evap leak. They did a smoke test and found out the fuel pump unit was all rusted out and also the straps holding the fuel tank in was all rusted out.
At first the washers just kept spraying and wouldn't stop. I had to take out the fuse to get it to stop. I recently put the fuse back in and now it won't work. The washers will just start spraying out of the blue and this is very dangerous if you are driving down the road and you can't get it to stop.
2006 hummer h2 sut 6.0 liter engine exhaust manifold bolts broken off.
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 17,152 of 36,659 model years in the NHTSA data (top 47% most complained about).
On average one model year of the H2 SUT has 7 complaints (3 years in the data). This year has 3, below average.
What to check before buying
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
- Visibility. Wipers, mirrors, defrosters, cracked glass.
Other years of this model
Questions and answers
What are the most common problems with the 2006 Hummer H2 SUT?
Owner complaints to NHTSA most often mention: engine and cooling, electrical system, fuel system. Total complaints: 3. The most frequent symptoms in complaint texts: fuel system, fuel smell (33%), rust, corrosion (33%), smoke, burning smell, fire (33%).
How many service bulletins (TSB) were issued for the 2006 Hummer H2 SUT?
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 SUT 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 2026-11-06.