Most common 2006 Hummer H2 problems
Share of the 22 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Hummer H2 complaints by model year
Best H2 years: 2008, 2007, 2006. Years to avoid: 2003, 2005, 2004. Compare all years →
2006 Hummer H2 recalls (4)
Electrical system
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…
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…
Electrical system
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.
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;…
Equipment › Other › Labels
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.
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.
Steering › Hydraulic power assist › Hose, piping, and connections
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.
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.
NHTSA defect investigations
Federal safety investigators have looked into 2 possible defects involving the 2006 Hummer H2:
Non-crash engine compartment fires
In a letter dated August 27, 2008, general motors corp. (GM) notified NHTSA that it will conduct a safety recall (NHTSA 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.
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.
What 2006 Hummer H2 owners say
Engine & cooling
The air filter covers on my H2 get hot and start deforming "ripples" in the plastic. The plastic molding between them where the wipers go through deforming also. I have replaced 4 air filter covers in under 6,000 miles. And 1 wiper molding. I am not sure of the consequences. Hummer says it's no problem. I have 1 of the air filter covers that has failed in my possession. According to GM/Hummer there is no problem. They will just keep replacing them.
1. Normal driving in town and highway 2. Failure of the drivers side & passenger side exhaust manifold bolts; causes exhaust gases to fill engine compartment and bypasses the catalytic emissions equipment. 3. Drivers side head had to be removed, broken manifold bolts extracted from the head, new manifold and stronger manifold bolts installed.
Brakes
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.
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.
Suspension
Tl contact owns a 2006 GMC Hummer H2. While driving 55 MPH, the contact lost control of the vehicle and drove into a canal. The tow mechanic stated that the lower ball joint snapped and caused the failure. The driver and passenger sustained scratches from the crash. A police report was filed. The vehicle was destroyed. The current and failure mileages were 8,000.
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. …
Frequently asked questions
Is the 2006 Hummer H2 a good car?
Based on 22 owner complaints filed with NHTSA, the 2006 H2 rates better than average: 63% fewer complaints than a typical year of the H2 at the same age. It is one of the best H2 years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2006 Hummer H2?
The engine & cooling — 5 complaints, 23% of all complaints for this model year, most often about exhaust system. Next are the brakes (4) and suspension (4).
How many recalls does the 2006 Hummer H2 have?
There are 4 recalls for the 2006 Hummer H2, the most recent from June 4, 2010 (electrical system). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Hummer H2?
The best years by complaints, compared at the same age, are 2008, 2007 and 2006. Years to avoid or approach with caution: 2003, 2005 and 2004. See the full Hummer H2 years comparison.
At what mileage do 2006 Hummer H2 problems happen?
The median mileage reported in complaints is about 60,000 miles; 35% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.