AI Damage2005 Hummer H2 SUT: common problems
Owners of the 2005 Hummer H2 SUT filed 12 complaints with NHTSA, most often about electrical system and visibility. Details by component below, with sources.
Key figures
- Owner complaints
- 12
What fails most often
- 1 Electrical system 42% of all complaints
- 2 Visibility 33% of all complaints
- 3 Service brakes 17% of all complaints
- 4 Steering 17% of all complaints
- 5 Engine 8% of all complaints
- 6 Engine and cooling 8% of all complaints
- 7 Powertrain 8% of all complaints
- Electrical system: 5 complaints (42% of all).
- Visibility: 4 complaints (33% of all).
- Service brakes: 2 complaints (17% of all).
- Steering: 2 complaints (17% of all).
- Engine: 1 complaints (8% of all).
Symptoms owners describe
How many of the 12 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 | 5 | 0 | 0 |
| Visibility | 4 | 0 | 0 |
| Service brakes | 2 | 0 | 0 |
| Steering | 2 | 0 | 0 |
| Engine | 1 | 0 | 0 |
| Engine and cooling | 1 | 0 | 0 |
| Powertrain | 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.
While driving on a city street at approximately 40 mph the vehicle started making a loud noise (similar to the sound a dirt bike engine makes). The sound became loluder when I pressed the brakes. I took the vehicle to the repair shop and was notified that the hydrobooster failed resulting in a steering fluid leakage.
Driving thru a heavy rain storm at 50 mph in the left lane of a three lane highway and the windshield wipers stopped working at about a 1/4 of the way up...pulled over as soon as I could ...did not panic...
Now my check engine light is on showing an oxygen sensor failure or catalytic converter. After researching the internet this problem is affecting thousands of people. Something needs to be addressed !!
Front windshield wipers and washer operate on there own.
Transmission overheat condition occurs filling the inside of the vehicle with a toxic gas. Hot transmissions can also catch on fire. This is a known condition; gm issued an alert to dealership service departments but no recall has occurred.
Speedometer slowly stops working. Speed reading will decrease to zero while traveling at highway speeds & around town. At first happened periodically now happening more often.
While driving my 2005 h2 hummer in a rain storm the windshield washer motor came on and started spraying water and would not stop until the motor quit working. Thank god I did not wreck. After checking other sites and complaints this looks like a defect not only in 2003 models but 2005 models as well.
Brake pedal felt very hard and whining noise was coming from engine compartment. Vehicle slowly stopped after driver's full body weight was put on pedal. There was nothing under the brake pedal and the brake fluid level was checked and found to be appropriate.
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 10,160 of 36,656 model years in the NHTSA data (top 28% most complained about).
On average one model year of the H2 SUT has 7 complaints (3 years in the data). This year has 12, above 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.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
Other years of this model
Questions and answers
What are the most common problems with the 2005 Hummer H2 SUT?
Owner complaints to NHTSA most often mention: electrical system, visibility, service brakes. Total complaints: 12. The most frequent symptoms in complaint texts: fuel system, fuel smell (8%), knocking, grinding or other noise (8%), overheating, coolant loss (8%).
How many service bulletins (TSB) were issued for the 2005 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 2005 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 2005 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.