Problems · NHTSA complaints
2005 Hummer H2 Sut problems
Owners filed 91 complaints about the 2005 Hummer H2 Sut with NHTSA between Dec 2004 and Mar 2026. The most-cited component is electrical system (32).
Complaints
91
Filed with NHTSA
Crashes
3
Reported by owners
Fires
1
Reported by owners
Injuries
2
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Electrical system32
- Visibility18
- Air bags12
- Steering8
- Service brakes7
- Service brakes, hydraulic6
- Power train5
- Engine5
- Visibility/wiper5
- Tires4
- Seats2
- Structure2
- Wheels2
- Vehicle speed control1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 7, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
2
4
1
0
5
9
17
4
4
5
7
10
4
6
4
1
3
1
0
1
0
2
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2004 | 2 |
| 2005 | 4 |
| 2006 | 1 |
| 2007 | 0 |
| 2008 | 5 |
| 2009 | 9 |
| 2010 | 17 |
| 2011 | 4 |
| 2012 | 4 |
| 2013 | 5 |
| 2014 | 7 |
| 2015 | 10 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 4 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 0 |
| 2023 | 1 |
| 2024 | 0 |
| 2025 | 2 |
| 2026 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Electrical system
32 reports1 fire
“The contact owns a 2005 Hummer H2. The contact stated that while parking in the mountains, the vehicle was in the park position, and it unexpectedly rolled and stopped at a boulder. There were no warning lights illuminated. The door hit the driver and knocked him to the ground, and he sustained an injury to his head, but medical attention was not provided. Another person on an ATV provided a jump start, but the vehicle failed to restart. The contact walked several miles to get assistance. The contact was able to view YouTube and replace the part. The contact stated that the transmission shifter cable had failed. There was a hole in the shaft connected to the transmission to the C clip. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 111,400.”
Visibility
18 reports
“TL* THE CONTACT OWNS A 2005 HUMMER H2. THE CONTACT STATED THAT THE WINDSHIELD WIPERS MALFUNCTIONED WHILE DRIVING 60 MPH IN INCLEMENT WEATHER. THE CONTACT WAS FORCED TO MANEUVER TO THE SHOULDER AND WAIT UNTIL THE RAIN STOPPED. IN ADDITION, THE CONTACT STATED THAT THE WINDSHIELD WIPERS ONLY FUNCTIONED INTERMITTENTLY. THE CONTACT DID NOT TAKE THE VEHICLE TO A DEALER OR A LOCAL MECHANIC. THE FAILURE MILEAGE WAS 41,000. UPDATED 04/13/12 *BF UPDATED 04/23/12”
Air bags
12 reports1 crash
“TL* THE CONTACT OWNS A 2005 HUMMER H2. THE CONTACT STATED THAT THE AIR BAG SERVICE WARNING INDICATOR REMAINED ILLUMINATED WHILE DRIVING, WHICH WAS A SAFETY CONCERN. THE VEHICLE WAS TAKEN TO A DEALER (HALEY BUICK GMC, 9831 MIDLOTHIAN TURNPIKE, RICHMOND, VA 23236, (804) 320-9054) WHERE IT WAS DIAGNOSED THAT THE SENSING DIAGNOSTIC MODULE FOR THE FRONT DRIVER'S SEAT NEEDED REPLACEMENT. THE VEHICLE WAS NOT REPAIRED DUE TO THE PART BEING DISCONTINUED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND DID NOT ASSIST. THE FAILURE MILEAGE WAS 83,550.”
Steering
8 reports1 crash
“The contact owns a 2005 Hummer H2. The contact stated that while the vehicle was parked, fluid started to leak from the steering wheel. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 140,000.”
Service brakes
7 reports
“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.”
Service brakes, hydraulic
6 reports
“The contact owns a 2005 Hummer H2. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed, and the brakes made a whistling sound. The contact, an independent mechanic, diagnosed that the brake booster needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and confirmed that there was no recall associated with the VIN. The failure mileage was approximately 70,000.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 7, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.