I believe there is a problem with the H3 Hummer 2006 I request to bring it to a dealer to get it checked. Has to do with the turning, reverse. When vehicle is put in neutral still seems in drive. Sounds like a plastic noise. Needs to be checked by a certified mechanic

- North Port, FL, USA

My sunroof has been leaking, on the passenger side it chimes out behind & below the glove box. On the driver's side it leaks directly from the sunroof onto the driver's seat, and behind the emergency brake. Both sides soak the floorboards front & back. It leaks whether stationary or in motion, however when it has been sitting during a rain storm, when you move it, sheets of water pour down from the sunroof.

- Centerton, AR, USA

The H3 will not start. Dash screen keeps showing the passlock activated and won't turn off. Computer thinks the H3 is being stolen. I have tried to reset and no luck. I had this problem about 4 weeks ago and changed the fuel pump. Then it happened again last week and now on 28 March 2020. Engine is turning over and electrical systems light up, but sounds like fuel is not getting into the fuel pump again. After doing some research, finding others having the same problem. Recommended procedure is to wait 10 min, still no luck. Waiting 15 min seemed to work before, but now it doesn't. how am I supposed to be safely in the vehicle, drive somewhere and then it stalls again" I am the original owner and haven't had this issue until it started 4 weeks ago. What if this happens while I am driving on the highway and fuel stops going to the pump" this could cause a multi-vehicle accident.

- Madison, AL, USA

The vehicle when stopping/ parking will allow you to remove the keys without the vehicle being in park therefore leaving the vehicle in a state that can rollnin either direction and to start the vehicle again the shifter needs tobe moved into the park position or it will not do anything.

- Reno, NV, USA

My 2006 H3 has sporadic issues with starting for a few years now. When I try to start it, it will crank fine but will not start. If I wait approximately 10 minutes & try again, it starts with no problems. During this issue, everything else works in the vehicle (radio, lights, etc..). I've had it checked by several mechanics & replaced lots of parts but didn't help this issue at all. I have read many complaints reference this same exact issue online & through NHTSA but nobody has had any positive responses. This is a major issue that should be taken care of by GM as a recall. I will be part of this class action lawsuit through these threads related to this Hummer H3 issue. Thank you & waiting to hear about this terrible GM issue.

- Hazlet, NJ, USA

When I crank my Hummer H3 up on cold mornings it dont start, sometimes it starts and then cuts off on warm days no problem.is there a recall on this product it seems that there are many complaints on this issue.

- Atlanta, GA, USA

I have owned my 2006 H3 Hummer for five years however the last two years my vehicle will not start leaving me stranded for at least ten minutes to twenty minutes hesitant to start... then starting as if nothing was wrong. Initially when I noticed a problem it was only once or twice a month now is 2 to 3 times a week...I've had the vehicle checked out on numerous of times being diagnosed and the tech not sure what the problem or issue really is..or why it happens so frequently..very frustrating please help with any advice

- Decatur, GA, USA

Truck will not start for no apparent reason. Key turns, sounds like it will start but does not. This has happened on several occasions and seems to be an ongoing problem for other Hummer owners too. I just had it towed once again to the mechanics shop. This is the 5th time within one year. Unable to leave my house during an emergency, child related.

- Panama City, FL, USA

Driver seatbelt gets stuck and I can't get out. Car won't start. Wait ten minutes with the key in first position then it starts. It will take some girl like myself stuck in a dark parking lot with a car that doesn't start for ten minutes.

- Schaumburg, IL, USA

This complaint is concerning the pass lock system on my Hummer H3. My H3 has been not starting due to the vehicle thinking it is being stolen. It has become a frequent problem and is really frustrating. When it first started happening it was, maybe 6 months before it happened again. Now, it is happening at least once a week. This morning I needed to bring my daughter to the emergency room for an extremely high fever and my vehicle would not start again. I had to wait about 10 minutes before I could get moving. This has become the norm. Truck won't start, wait 10 minutes and try again; truck starts. This is extremely frustrating and really an inconvenience.

- Port Arthur, TX, USA

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

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

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

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

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

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

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

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

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

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