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2006 Hummer H2 problems

The most common problem on the 2006 Hummer H2 is engine and cooling, typically around 65,510 miles. Its complaint count is close to a typical H2 model year.

Typical yearClose to a typical year
Year score
66/100
Owner complaints
22
Recalls
4
Service bulletins
747
Worst area
Engine

The worst 2006 Hummer H2 problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

  • Engine
    5
  • Brakes
    4
  • Electrical
    4
  • Suspension
    4
  • Steering
    3

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Engine
    5
  • Brakes
    4
  • Electrical
    4
  • Suspension
    4
  • Steering
    3
  • Airbags
    2
  • Seats
    2
  • Transmission
    2
  • Visibility
    2
  • Fuel system
    1
  • Lights
    1
  • Seat belts
    1
  • Wheels
    1

Recalls 4

Electrical systemReported June 4, 2010 · 1,365,070 vehicles affected
What is wrong
Gm is recalling certain model year 2006-2009 buick, lucerne; cadillac dts; hummer h2; model year 2008-2009 buick enclave; cadillac cts; model year 2007-2009 cadillac escalade, escalade esv, escalade ext; chevrolet avalanche, silverado, suburban, tahoe; gmc acadia, sierra, yukon, yukon xl; saturn outlook; and model year 2009 chevrolet traverse vehicles equipped with a heated washer fluid system (hwfs). A recall was implemented in 2008 to add a fuse to the control circuit harness to address the potential consequences of a printed circuit board (pcb) electrical short. However, there have been new reports of thermal incidents on hwfs modules after this improvement was installed. These incidents resulted from a new failure mode attributed to the device's thermal protection feature. The significance varies from minor distortion to considerable melting of the plastic around the hwfs fluid chamber.
Risk
It is possible for the heated washer module to ignite and a fire may occur.
Remedy
Dealers will permanently disable and remove the heated washer fluid module. An updated page for the owner manual will be provided and inserted in the owner manual to document that the feature has been permanently disabled and removed from the vehicle. The safety recall began on june 11, 2010. Owners may contact buick at 1‑866‑608‑8080, cadillac at 1‑866‑982‑2339, chevrolet at 1‑800‑630‑2438, saturn at 1‑800‑972‑8876, gmc at 1‑866‑996‑9463 and hummer at 1‑800‑732‑5493 or at the owner center at www.gmownercenter.com.

Recall number 10V240000 · Recall details

Electrical systemReported August 28, 2008 · 857,735 vehicles affected
What is wrong
Gm is recalling 857,735 my 2006-2008 buick lucerne; cadillac dts; hummer h2; my 2007-2008 cadillac escalade, escalade esv, escalade ext; chevrolet avalanche, silverado, suburban, tahoe; gmc acadia, sierra, yukon, yukon xl, saturn outlook; and my 2008 buick enclave vehicles equipped with a heated wiper washer fluid system. A short circuit on the printed circuit board for the washer fluid heater may overheat the control-circuit ground wire.
Risk
This may cause other electrical features to malfunction, create an odor, or cause smoke increasing the risk of a fire.
Remedy
Dealers will install a wire harness with an in-line fuse free of charge. The recall began on september 12, 2008. Owners may contact buick at 1‑866‑608‑8080; cadillac at 1‑800‑982‑2339 or http://www.cadillac.com; chevrolet at 1‑800‑630‑2438; saturn at 1‑800‑972‑8876 or http://www.saturn.com, gmc at 1‑866‑996‑9436; or hummer at 1‑800‑732‑5493; or through their website at http://www.gmownercenter.com .

Recall number 08V441000 · Recall details

Equipment: other: labelsReported December 7, 2005 · 32,068 vehicles affected
What is wrong
Certain trucks and sport utility vehicles fail to conform to the requirements of federal motor vehicle safety standard no. 110, "tire selection and rims." these vehicles were shipped with tire and loading information labels listing an inacccurate vehicle capacity weight.
Risk
A misprinted label could lead to improper vehicle loading specifications or tire inflation which could result in a tire failure, increasing the risk of a crash.
Remedy
Owners will be provided with corrected labels and installation instructions. At the customer's option, a dealer can install the label for them. The recall began on march 31, 2006. Owners may contact buick at 1‑866‑608‑8080, cadillac at 1‑866‑982‑2339, chevrolet at 1‑800‑630‑2438, gmc at 1‑866‑996‑9463, hummer at 1‑800‑732‑5493, pontiac at 1‑800‑620‑7668, saturn at 1‑800‑972‑8876, or isuzu at 1‑800‑255‑6727.

Recall number 05V552000 · Recall details

Steering: hydraulic power assist: hose, piping, and connectionsReported October 5, 2005 · 123,592 vehicles affected
What is wrong
Certain passenger vehicles may have been built with a power steering hose that is not to specification. Under extreme steering maneuvers, such as turning the steering wheel fully to the left or right while braking, the hose may fracture and leak fluid.
Risk
If this were to occur, power steering assist would be lost and increased steering effort would be required. On vehicles equipped with hydro-boost power brakes, it could also result in loss of power brake assist and increased braking effort would be required. If the power steering fluid spray were to spray onto hot engine parts, an engine compartment fire could occur.
Remedy
Dealers will inspect the power steering hose(s) for two suspect date codes and replace them if required. The recall will begin on october 14, 2005. Owners may contact chevrolet at 1‑800‑630‑2438, gmc at 1‑866‑996‑9463, buick at 1‑866‑608‑8080, cadillac at 1‑866‑982‑2339, isuzu at 1‑800‑255‑6727, or hummer at 1‑800‑732‑5493.

Recall number 05V455000 · Recall details

See all 4 recalls for the 2006 Hummer H2

Defect investigations

Non-crash engine compartment firesOpened June 12, 2008, closed September 8, 2008

In a letter dated august 27, 2008, general motors corp. (gm) notified the federal safety agency that it will conduct a safety recall (the federal safety agency recall number 08v‑441) to address a safety relateddefect that can result in engine compartment fire in approximately 850,000 vehicles equipped with a heated windshield washer fluid option.the subject vehicles of this investigation comprise over three-quarters of the recall population. According to gm, a short circuit on the printed circuit board for the windshield washer fluid heater module may overheat the control-circuit ground wire. This may cause other electrical features to malfunction, create an odor or cause smoke and in rare cases it may cause a fire.as a remedy, gm dealers will install a wire harness with an in-line fuse. In addition to the subject vehicles, several other gm models with the heated windshield washer fluid option are included in recall 08v‑441: my 2006-2008 buick lucerne (manufactured august 2005 through november 2007); my 2008 buick enclave (manufactured february 2007 through april 2007); my 2006-2008 cadillac dts (manufactured may 2007 through november 2007); my 2007-2008 saturn outlook (manufactured august 2006 through april 2007); and my 2007-2008 gmc acadia (manufactured august 2006 through april 2007) vehicles.gm is instructing owners to take their vehicle to a dealer for service if they experience symptoms of windshield washer heater module short circuits. Gm's recall resolves the safety defect concerns pursued by this investigation.this engineering analysis is closed.

EA08010

Hummer h2 steering knuckle failuresOpened October 28, 2005, closed April 30, 2007

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

Technical service bulletins for the 2006 Hummer H2 747

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 747 bulletins for the 2006 Hummer H2

What 2006 Hummer H2 owners say

Most recent owner complaints, unedited.

Filed Jun 2, 2025 · Electrical, Visibility · 190,000 miles · NJ

The contact owns a 2006 Hummer H2. The contact stated while driving and activating the blower motor, the blower motor was intermittently inoperable. The contact stated that an abnormal electrical burning odor was coming from the vehicle. The contact stated that upon activation, the A/C and the heating systems were intermittently inoperable. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the blower motor wiring harness needed to be replaced. The vehicle was not repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 190,000.

Filed May 21, 2024 · Electrical · 196,000 miles · NJ

The contact owns a 2006 Hummer H2. The contact stated while driving at undisclosed speeds with the A/C activated, the contact became aware of an abnormal burning electrical odor. No warning lights were illuminated. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the blower motor resistor needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 196,000.

Filed Jul 22, 2019 · Steering, Suspension · 130,000 miles · NJ

The other day I took a ride in my truck and upon driving approximately two blocks from my home the steering control of the car totally failed. Imagine driving your car and at some point, you lose the capability of controlling your cars direction while holding your steering wheel. One can only imagine if I was going 65 miles an hour and driving on a highway then losing the ability to turn your wheels. I am blessed this malfunction happened when I was only traveling 10 miles an hour. After calling a tow truck and having my car towed to a local repair shop, it was determined the control arm bolt had broken off therefore losing total control of the cars steering capability. This is unheard of and something like this should never happen at all during normal use. With all of this I continue to think about how lucky I was to survive a mechanical problem of this sort and how I could have fatally injured someone else with this defected control arm of this vehicle. So, I decided to make a call to gm and report this issue and to advise the company of a problematic issue with the design or engineering of the hummers control arm steering component the company representative acknowledged my complaint and recorded my description of the events and the issues of the cars steering system. I reiterated my concerns about the issues and how not addressing this in some sort of a recall may result in deaths. I am attaching pictures of the part which the bolt had broken so you may consider a recall of the vehicle's control arm. I guess people need to get hurt before your company acts and takes this seriously. Copy to browser https://www.facebook.com/photo.php?fbid=10219081735095616&set=pcb.10219081750456000&type=3&__tn__=hh-r&eid=arbbiwleqebkoinfzrahtjt9y10vzur38f7wzeiwrinijl6kfvt5hc8_wo8pcpfcdelskfkiuerthou3 please be aware of potential hazard.

Filed Feb 19, 2019 · Seat belts · IL

Salesman mr lawrence said that they could not sell a vehicle with seat belts that did not work the drivers side rear was not repaired as stated. I took delivery of the used vehicle 2-18-19 at 0800 approximately

Filed Mar 15, 2018 · Engine · 115,000 miles · FL

Exhaust leaking because manifold bolts broken , this is my second hummer , my lawyer has a hummer also and I belong to hummer group here in florida

Filed Mar 15, 2018 · Engine · 115,000 miles · FL

Exhaust bolts broken , leaking exhaust fumes into vehicle , engine fire ???? City driving

Filed Aug 7, 2016 · Electrical, Seats · 120,000 miles · LA · fire

Vehicle had been driven approximately 2 miles from start time, was stationary and unoccupied for approximately 10-25 minutes. Vehicle interior caught fire at the base of the top sitting area of the rear seat, flames from fire melted the over head interior light and ignited a fire on the head liner, which caused the fire to spread under neath the headliner and roof of the vehicle, melting the exterior paint. There was no prior indication of burning when driving or after parking the vehicle prior to the fire. Fire department advised it was believed to be related to rear seat heaters malfunctioning causing combustion that lead to an interior fire. Doors were locked prior to the fire, and store surveillance didn't show any signs of exterior tampering with the vehicle.

Filed Nov 4, 2015 · Brakes · 111,000 miles · PA

Tl* the contact owns a 2006 hummer h2. The contact stated that the brake lines were corroded, which caused them to rupture and leak. The vehicle was not repaired. The manufacturer was not made aware of the issue. The failure mileage was 111,000.

Filed Oct 27, 2015 · Brakes · 60,000 miles · OH

Tl* the contact owns a 2006 hummer h2. The contact stated that the brake pedal was applied more than once and it traveled to the floorboard. While driving at 60 MPH, the front passenger side brake line was rusted and fractured. As a result, the vehicle was difficult to maneuver. The vehicle was cautiously driven to an independent mechanic who replaced the anti-lock brake system and the front passenger side brake line. The VIN was not available. The manufacturer was notified of the failure. The approximate failure mileage was 60,000.

Filed Apr 3, 2014 · Airbags · 40,000 miles · CA · crash · 1 injury

Tl* the contact owns a 2006 hummer h2. The contact stated that while driving at an unknown speed, the contact crashed into a tree and the vehicle was destroyed. The air bags failed to deploy. The contact sustained injuries to the left arm and chest. A police report was filed at the scene. The vehicle was not inspected to determine the cause of the air bag deployment failure. The manufacturer was not notified. The failure mileage was 40,000.

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Questions about the 2006 Hummer H2

Is the 2006 Hummer H2 reliable?

Owners have filed 22 complaints about the 2006 Hummer H2, close to a typical H2 model year.

What is the 2006 Hummer H2 year score?

The 2006 Hummer H2 scores 66 out of 100 (average). 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 2006 Hummer H2?

Engine and cooling, with 5 complaints, typically around 65,510 miles. Next is brakes (4).

How many recalls does the 2006 Hummer H2 have?

4 recalls, covering electrical system, equipment and steering.

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