Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.

NHTSA — Unknown Or Other Problems


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
75,057 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 Hummer H3 miscellaneous problems

miscellaneous problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2006 Hummer H3:

Unsubscribe any time. We don't sell/share your email.

2006 Hummer H3 Owner Comments

problem #14

Sep 042016


  • 97,800 miles


The anti-theft engages randomly and prevents me from starting my car. This is not only inconvenient but could endanger my safety. There are numerous complaints listed about this defect by other H3 owners. This should be recalled. I just purchased the car less than 1 month ago.

- Coram, NY, USA

problem #13

Aug 182016


  • 118,000 miles
2006 Hummer H3 sun roof leaks and water seeping into electrical system. Had same issue 1 year ago and had fixed. Same problem just under 1 year later. Never use sun roof is never opened or cracked but being told issue stems from debris build up which should not occur as the roof is never opened. Looking online I have found a lot of people with the same issue. Issue happens during rain whether vehicle is stationary or moving.

- Crestwood, IL, USA

problem #12

Aug 082016


  • miles
My vehicle will not start followed by a 10 minute lockout period. This happens every few days. Once the vehicle sits for 10 minuted it will start. This happens regardless of wether conditions, will persist intermittently anytime of day; does not have anything to due with key fob or how I enter the vehicle.

- Calumet Park, IL, USA

problem #11

Aug 012016


  • 124,000 miles


My vehicle repeatedly leaves me stranded, due to faulty operations of the GM passlock system. Periodically, the vehicle, despite being cranked with a valid key, will turn over and then die, because the anti-theft system has disabled the fuel injectors and a flashing lock icon will display on the dash for 10 minutes. When the problem first started, waiting the 10 minutes then cranking usually worked. Now, it takes sometimes 8-9 tries to finally crank, waiting 10 minutes between each attempt, thus leaving me stranded for 1-2 hours. Once the vehicle cranks, it runs fine, but I never know when I get out of it, if it's going to work the next time. Occasionally, it will work fine for several days, then decide to quit working again. I do not believe I should have to pay for the malfunctioning of a system that I had no choice of opting into. I am willing to be responsible for whether or not my vehicle gets stolen. I did not ask for GM's protection, nor do I want or need it. I just want my vehicle to crank and drive like it's supposed to.

- Birmingham, AL, USA

problem #10

Jun 242016


  • 120,000 miles
While the vehicle is stationary and upon entering the vehicle, the vehicle will randomly not permit you to start the vehicle. After searching online on several forums, I see that thousands upon thousands of people are having this same issue with Hummer models, not just the H3. It seems that the ignition is believing you are a burglar, and it locks you out for 10 minutes. After the 10 minutes have passed, you can start the car with no problem. The only way to get around this (per GM) is to replace the ignition, but since there are so many complaints of this I believe it should be a recall instead of consumers having to pay for this flaw.

- Smethport, PA, USA

Search for these popular complaint phrases...

problem #9

Apr 052016


  • 60,000 miles
When trying to start my Hummer it turns over but will not fire. After 10 minutes, fires right up. To me it seems like a security/theft problem.

- Bremen, IN, USA

problem #8

Mar 242016


  • 103,000 miles


Onstar emergency request button, and all other onstar buttons do not transmit or receive. A verizon message announces "no phone service available." Happen at all times, in all conditions. Verizon, GM and onstar each deny its their problem.

- Herndon, VA, USA

problem #7

Mar 062016


  • 50,000 miles
Sometimes when I go to start my car it will not start. Then I wait exactly 10 minutes and it starts right up. This has been going on for about four years now. It happens about six times a month

- Acampo, CA, USA

problem #6

Jun 012015


  • miles
This has been happening for months. My Hummer will not turn on then 10 to 20 minutes go by then it'll start and it's happening more frequent and taking longer to turn on. If you google "why won't my 2006 Hummer start" there's a lot of people going through the same problem. No one knows what it is!! I think this should be a recall because its not a maintence issue. Please help!! this is starting to get trouble some especially when it doesn't start and you have to go somewhere. I'm thinking about trading it in but I really don't want to because I put a lot of money in it already!!

- Hobbs, NM, USA

problem #5

Dec 012015


  • 112,000 miles
When the car is idling, there is a strong smell of exhaust fumes coming out of the air vents. The smell dissipates when the car is in motion. The vehicle has been checked for any leaky exhaust pipes or gaskets but nothing has turned up positive.

- Gilbert, AZ, USA

problem #4

Aug 132015


  • miles


In a document dated August 2015 I received a safety recall for my Hummer H# 2006. "General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2006 model year Hummer H3. As a result, GM is conducting a safety recall. We apologize for this inconvenience. However, we are concerned about your safety a D continued satisfaction with our products, " important * your vehicle is involved in GM safety recall 15042 * parts to repair your vehicle are not currently available. When parts are available, we will send you another letter asking you to contact your GM dealer to arrange a service appointment. * this service will be performed for you at no charge." To date, I have not received any correspondence from either the manufacturer nor GM. The recall letter advised me to contact you if I was not satisfied that they had done their best to remedy this condition without charge and within a reasonable time. I certainly am not satisfied that this matter has been resolved within a reasonable time. I am afraid to drive my vehicle for fear it will burst into flames due to the problem described to me. However, I have only one vehicle and public transportation is not reliable in my area. I am beginning to wonder if the parts to repair my vehicle are ever going to be available, and further, if I will ever receive the promised second letter telling me to set up an appointment with my GM dealer to get my vehicle repaired.

- Austin, TX, USA

problem #3

May 012009


  • 60,000 miles
There is a known issue with this vehicle leaking I noticed it when it was raining that rain would leak through the on star microphone as well as through the front the driver and passenger doors and make the carpet like a sponge: Https:// the video attached to this link shows a prime example. If you read the comments it would show many customers of been affected with the same exact model vehicle. Also this video shows another example of water leaking through the on star microphone. Https:// it is too expensive to have to pay $130 for them to diagnose a manufacturing flaw that multiple owners are going through. Please set a recall for this vehicle for them to resolve. Again it is a 2006 Hummer H3. Thanks in advance.

- Severn, MD, USA

problem #2

Jan 082015


  • 110,000 miles
When I start the car the car is going on reverse or I am on neutral at different occasions.starter problems??

- Roseland, VA, USA

problem #1

Jan 172012

H3 5-cyl

  • 96,000 miles
Very very common problem with GM products and excessive problem with H3 heaters. You smell something burning in your vehicle then your heater fan starts fluctuating and ultimately stops. There are reports that the dealership will fix the burnt plug, but it won't fix the problem, it'll burn up again. Now I have no heater in January in Ohio this should be a recall !!!!!!!!!

- Lisbon, OH, USA

Not what you are looking for?