Odometer Fraud. The contact purchased a 2004 Hummer H2. The contact discovered a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 200,000. It was later discovered that the mileage on the Title was 210,000. Additionally, the contact stated she felt pressured to purchase the vehicle, signed the contract, and was unable to recoup the funds.
The worst 2004 Hummer H2 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes14
- Electrical14
- Visibility13
- Steering6
- Airbags3
- Body3
- Engine3
- Suspension3
- Driver assistance2
- Transmission2
- Acceleration1
- Lights1
- Locks1
- Seat belts1
- Seats1
- Tires1
- Wheels1
Specific symptoms reported on the 2004 Hummer H2
Recalls 3
Seat belts: rear/other
- What is wrong
- On certain crew cab pickup trucks and sport utility vehicles, the 2nd row center occupant seat belt routing may make it difficult to position the lap portion of the safety belt low around the hips of occupants, especially smaller occupants, seated in this position. Appropriate use of a child seat or booster seat, as recommended for small children, does improve the fit condition for this user group. In addition to instructions on proper infant and young child restraint (with child seats or boosters), special verbiage for restraining older child is included in the owner's manual. Also, the suggested seat belt fit/routing for adults, irrespective of seating position, is described in the owner's manual text.
- Risk
- A lap portion of the seat belt routing that is not low and snug on the hips can allow the lap belt to ride up on an occupant's abdomen instead of fitting low around their hipbones, and therefore, can expose them to more risk of abdominal and internal organ injury.
- Remedy
- Dealers will cut open the guide loop, remove a portion of the loop, and then the remaining two sides should be folded over and secured with a retainer free of charge. The recall began on july 21, 2005. Owners may contact cadillac at 1‑866‑982‑2339, chevrolet at 1‑800‑630‑2438, gmc at 1‑866‑996‑9463, or hummer at 1‑800‑732‑5493.
Recall number 05V163000 · Recall details
Service brakes, hydraulic
- What is wrong
- Certain trucks, sport utility vehicles, and vans equipped with bosch hydro-boost brake assemblies, the hydraulic brake booster pressure accumulator may crack and separate from the hydro-boost assembly during normal operating conditions.
- Risk
- If a separation occurred and the hood of the vehicle were open, fragments from the accumulator could cause injury to people in the immediate area. The presence of this crack or fractured surface could allow the hydraulic fluid to leak from the accumulator circuit of the booster assembly. The loss of fluid would cause increased steering and braking effort and a crash may occur without prior warning.
- Remedy
- Dealers will test the hydro-boost assembly for functional operation of the two-function valve. If the hydro-boost assembly fails the test, dealers will replace the assembly free of charge. The recall began on march 23, 2005. Owners may contact chevrolet at 1‑800‑630‑2438, gmc trucks at 1‑866‑996‑9463 and hummer at 1‑800‑732‑5493.
Recall number 05V043000 · Recall details
Service brakes, hydraulic
- What is wrong
- Certain sport utility vehicles, pickup trucks, and passenger vans fail to comply with the requirements of federal motor vehicle safety standard no. 135, ?passenger car brake systems.? Some of these vehicles were produced with an out-of-specification brake hydro-boost housing relief valve bore.
- Risk
- Consequently, the valve o-ring seal may fracture. Steering efforts may be slightly increased while braking or parking. Under certain driving conditions, a fractured seal may require a slight increase in the applied brake pedal effort to achieve the same vehicle deceleration rate as prior to the seat fracture.
- Remedy
- Dealers are to replace the hydro-boost relief valve. The recall began on june 18, 2004. Owners should contact cadillac at 1‑866‑982‑2339; chevrolet at 1‑800‑630‑2438; gmc at 1‑866‑996‑9463; or hummer at 1‑866‑486‑6376.
Recall number 04V045000 · Recall details
See all 3 recalls for the 2004 Hummer H2
Defect investigations
Hummer h2 steering knuckle failures
Odi upgraded this investigation at the conclusion of pe04-080.the alleged defect involves the failure of the steering knuckle at the lower ball joint boss, resulting in a separation of the lower ball joint from the knuckle.a lower ball joint separation could result in a loss of steering and/or a disabled vehicle. It appears that the fractures of h2 steering knuckles can be attributed to wheel/tire collision forces being transferred directly to the steering knuckle.the original knuckle design appears to be sufficient for the h2 application.evidence from inspected vehicles, photographs, police reports and edr data indicates collision impact events placed stress on the steering knuckle causing it to fracture.further use of agency resources does not appear to be warranted.the closing of this investigation does not constitute a finding by the federal safety agency that no safety-related defect exists with regard to the subject component.the agency reserves the right to take further action on this issue if warranted.
EA05017
Steering knuckle fracture
During the pe, odi investigated the hummer h2 for fractures which were occurring at the front steering knuckle lower boss.when the knuckle lower boss fractures, the lower ball joint stud is released and the entire knuckle and wheel/tire assembly separates from the vehicle.odi is upgrading this investigation to gain a full technical understanding of the factors which contributed to these failures.
PE04080
Technical service bulletins for the 2004 Hummer H2 748
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
- This Preliminary Information communication provides information to the technician about vehicles that have...
- This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- This Preliminary Information communicates to the dealer the process for downloading or updating operating...
- This Preliminary Information communication provides information to the technician about vehicles that the...
- This Preliminary Information communication provides information to the technician about changing the tire...
- Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles
- This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as...
- This service bulletin provides information for dealers/technicians on Service Programming System (SPS)...
- This Warranty Administration bulletin provides retail and wholesale service personnel with the...
What 2004 Hummer H2 owners say
Most recent owner complaints, unedited.
Report states my vehicle has a recall on 2nd row seatbelts.
Yesterday I turned off the alarm and unlocked the doors via the keypad. I opened the driver door and my wife opened the passenger rear door and the Hummer H2 started. No key in the ignition and the fob does not have a start button. I then got in the car and inserted the key and turned the key to ON then to off and the vehicle would not shut off. Only after cycling through the gears was I able to shut off the vehicle. I have now disconnected the battery to prevent another unwanted start.
The contact owns a 2004 Hummer H2.The contact stated while driving at 35MPH, the contact stated the vehicle loss of control and forward momentum to the vehicle which caused the vehicle stalled and loss motive power. The contact who is a mechanic inspected the vehicle and notice that front differential carrier bolt had snapped was detached from the frame and connection to the engine. The vehicle was towed to the contact residence then towed later to a local dealer who inspected the vehicle diagnosed the failure the same as the contact that front differential carrier bolt was damaged and to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was at approximately 100,000. Consumer stated component that failed is the front differential to front differential carrier connection.
Tl* the contact owns a 2004 hummer h2. While driving approximately 25 MPH, the brake pedal was depressed and traveled to the floorboard. The stopping distance was extended. While examining the vehicle, the contact noticed brake fluid leaking under the subframe. The vehicle was not diagnosed or repaired. The manufacturer was notified. The local dealer was not contacted. The failure mileage was 160,000.
Tl* the contact owns a 2004 hummer h2 equipped with aftermarket nitto mud grappler extreme tires, size: 37/13.5/20 (na). The tires were purchased on november 28, 2018. The contact stated that the two front tires were worn more than halfway ever since they were purchased. The manufacturer was notified of the failure and stated that the tires were not designed for city driving. The tires were not replaced. The approximate vehicle failure mileage was 205,000 and the tire failure mileage was 2,000.
Whole cluster lights up on car door locks don't work radio won't go off air bag lights on all brake lights on , this was going down a city street driving
I am having a problem with my hummer 2004. The lock light comes on and my hummer will not start. This is so horrible the problem started about 3 months ago. Everytime that light comes on I have to waite 15to 25 minutes for it to start again.
Right front brake hose rubbing on wheel and cutting loss of fluid and braking effeteness was moving in driveway when it popped the mileage is 29236
Brakes lines under vehicle have excessive corrosion and have finally cracked, resulting in complete brake failure. Event did not result in accident. Vehicle has not been operated in a northern snow region nor coastal area.
Compare the 2004 Hummer H2
Other model years
Questions about the 2004 Hummer H2
Is the 2004 Hummer H2 reliable?
Owners have filed 59 complaints about the 2004 Hummer H2, 2.7 times a typical H2 model year. It is one of the years we flag to avoid.
What is the 2004 Hummer H2 year score?
The 2004 Hummer H2 scores 37 out of 100 (poor). The score compares it with the other model years of the Hummer H2: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2004 Hummer H2?
Brakes, with 14 complaints, typically around 76,000 miles. Next is electrical (14).
How many recalls does the 2004 Hummer H2 have?
3 recalls, covering seat belts and service brakes, hydraulic.
Was there a recall on the 2004 Hummer H2 brakes?
Yes, 2 recalls: 05V043000, 04V045000. Check your VIN to see if your car still needs the free repair.
What year does the Hummer H2 have bad brakes?
The Hummer H2 model years with the most brakes complaints are 2003 (18 complaints), 2004 (14 complaints) and 2005 (11 complaints).
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