Reports submitted to NHTSA by owners and drivers, shown in full
Data refreshed
Complaints on fileComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
361
+1 complaint in 30 days
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
37
Filed in the last 12 monthsReports filed with NHTSA in the trailing 365 days. Recent volume reflects attention and vehicle age as much as anything else.
3
Reports on file since Nov 15, 2005
What this page shows
Our database holds 361 NHTSA owner-reported complaints for the 2006 Hummer H3. Each one is a report filed by an owner or driver and published by NHTSA without most of them being verified. A complaint is not a confirmed defect, not a recall and not a manufacturer bulletin. Narratives are shown exactly as filed.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Complaints, most recent first
Showing 1–25 of 361 · page 1 of 15
Electrical
Filed Jul 21, 2026
Theses templates dosent recognize the key and kicks on the security system which stops the motor from turning on. So you are stuck for 10 minutes then you can try again all so sometimes the motor tries to turn on by just sticking the key in the ignition before you even turn it. By looking at youtube alot of the H3s and the Colorados do this
NHTSA ID
11751883
Incident
Jul 17, 2026
Body & structureEngine
Filed Jan 14, 2026
The contact owns a 2006 Hummer H3. The contact stated that the frame was rusted on the driver's side. The check engine warning light was illuminated. The contact looked underneath the vehicle and was able to see through the subframe. The contact also noticed cracks in sub frame. The contact was concerned about driving the vehicle. The vehicle was taken to an independent mechanic who determined there was an issue with the temperature sensor. While receiving an oil change, it was determined that the subframe was rusted. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and confirmed that there was no recall coverage for the failure. The failure mileage was approximately 130,000.
NHTSA ID
11710957
Incident
Oct 14, 2025
Mileage
130,000 mi
Engine
Filed Nov 11, 2025
The blower resistor and harness needs replaced it looks like it caught fire or default
NHTSA ID
11698835
Incident
Oct 31, 2025
Filed Aug 9, 2025
I was trying to get away from a stranger that was following me that was threatening and scary and when I got in the my Hummer h3 it wouldn't start its the ANTI THEFT that's thinking the car is being stolen this is happened several times of the car not starting i went to Google and YouTube and there's hundreds of videos complaining and giving instructions on waiting 10 min before trying to start the car , this is very dangerous especially for woman and it needs to be recalled and fixed before someone really gets hurt or killed , I was on scared
NHTSA ID
11679484
Incident
Aug 8, 2025
ElectricalEngine
Filed Jan 2, 2025
On the electrical, I refer to my air conditioning and heater. When I have my air selection to coldest and I drop 1 click for it to be less cool, my heater turns on and at times it smells like something burning. I have to turn it off . On the engine, after I hit 90,000 miles, I have to fill up my engine oil every 2-3 weeks because my vehicle is burning it quick or something. It doesn't leak oil at all. The oil just seems like it's burning somewhere and I ha e to be waisting money to buy oil $30 to $60 a month. Please help. Thank you!
NHTSA ID
11633569
Incident
Jan 1, 2025
Suspension
Filed Dec 28, 2024
Was driving this vehicle about 45 mph and began to shake violently. Was able to get it slowed down and back under control. Happened two more times on my drive home and took it to an auto repair shop today and found the frame is broken on both sides in front of rear leaf springs.
NHTSA ID
11632836
Incident
Dec 26, 2024
Engine
Filed Aug 27, 2024
Was heading home from work and the 2006 Hummer H3 shut off while traveling in the middle of traffic was able to cruise in Nuetral until I could stop to start car again started car and yet again I receive a cylinder misfire code which has been repaired on multiple attempts still no success. I am going to end up either crashing or an emergency vehichle will be trying to get by and I can't move because the motor shut down.
NHTSA ID
11611276
Incident
Aug 27, 2024
Filed Aug 23, 2024
Sunroof leaking creating water to leak into the driver seat, passenger seat, speakers on the door. Water trickling down from the Onstar system while parked and in motion this is a safety hazard. The only resolution that is given from GM is to blow out the hose to the sunroof, that’s not helping this issue is creating mole into the vehicle and once again it’s hazardous when driving As the water raining inside as well as outside of the vehicle. please help not seeing any recalls for this Manufacturing defect.
NHTSA ID
11610460
Incident
Aug 10, 2024
Engine
Filed Aug 22, 2024
Engine has very bad rough idle after multiple attempts to repair will get a misfire code often that goes on and comes off engine has rough idle to the point where truck shuts off completely while waiting at traffic light. My safety is at risk as this could happen during driving causing a wreck or during a light change when the emergency vehicles need me to move over and my truck don't run. Vehicle was inspected by multiple mechanic and still has issues. Check engine light comes on at time of motor failure or when rough idle.
NHTSA ID
11610345
Incident
Aug 1, 2024
BrakesOther / unspecifiedPowertrain (other)
Filed Nov 22, 2023
Frame Rust Entire frame needs replaced
NHTSA ID
11556476
Incident
Nov 22, 2023
Body & structureVisibility
Filed Sep 7, 2023
The contact owns a 2006 Hummer H3. The contact stated while driving 75 MPH, the hood louver detached from the vehicle and cracked the front windshield. The contact stated that the crack obstructed his vision while driving. The contact called the dealer and was informed that the vehicle was previously repaired under NHTSA Campaign Number: 10V179000 (Structure). The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 193,000.
NHTSA ID
11543150
Incident
Sep 5, 2023
Mileage
193,000 mi
Suspension
Filed Jul 2, 2023
Complete rust through of frame of my 2006 HUMMER H3.
NHTSA ID
11530020
Incident
Jun 10, 2023
Fuel systemPowertrain (other)Suspension
Filed Jun 23, 2023
I was driving the vehicle at a normal rate of speed and stopped at a traffic light getting ready to change. I applied the brakes and when doing so, I heard some horrible noises and felt certain that parts had fallen out of the car. I knew something was immediately seriously wrong. I put the car in park (but it was effort and a grinding noise to put it in park) and stepped out to look under the car. No parts were on the ground, but something was leaking out of the bottom of the car. I got back in and put the car in drive to move it from the roadway knowing I was going to need assistance to tow it somewhere. It grinded trying to put it in any gear and only "revved" the engine when I tried to apply gas to drive it. There was absolutely no warning. The tow driver immediately noticed the drive shaft was disconnected and that was the leaking and thus going nowhere. My mechanic said that both leaf springs snapped off and that caused the drive shaft to sever, hitting the gas tank (or strap) and some other things. My concern is that there is a recall on leaf springs for every year Hummer H3 except mine as well as 1995-2015 Chevrolet, GMC, and Hummer leaf springs. I'm having a very difficult time with how both of mine snapped with no warning tearing all of these components out and it is not involved in the recall. It is the same parts on all of these. Also, my vehicle has spent the majority of its life garaged, never driven in the snow or rain, as I have babied this car. I have a car wash membership too and constantly keep this car meticulous. Hummer said that enough people need to complain, but I would not even have thought to complain had BOTH not snapped off simultaneously finding the recall for all other years while researching the cost. Had only 1 broke, I wouldn't have given it any thought. And Hummer said that they wouldn't even talk to me unless my car was at a GM dealership. This should be included in the recall. This is not pure coincidence. They need to fix it.
NHTSA ID
11528537
Incident
Jun 20, 2023
Suspension
Filed May 8, 2023
Frame rot all the way thru from front to back. I am able to poke holes in spots all around it.
NHTSA ID
11521053
Incident
May 1, 2023
Transmission
Filed Mar 18, 2022
The contact's husband owns a 2006 Hummer H3. The contact stated that while she was attempting to park the vehicle, the gear shifter seized in the neutral (N) position as she attempted to place the gear shifter into drive (D). There was no warning light illuminated. The contact was able to park the vehicle however, the gear shifter remained in the neutral (N) position. The dealer nor the manufacturer had yet to notified of the failure. The vehicle had yet to be serviced or diagnosed for the failure. The failure mileage was approximately 180,000.
NHTSA ID
11457262
Incident
Mar 18, 2022
Mileage
180,000 mi
Powertrain (other)
Filed Jan 25, 2022
Plastic shift fork in transfer case broke. Truck locked up turning onto main road from side street was almost hit.
NHTSA ID
11448748
Incident
Jan 1, 2022
Suspension
Filed Jul 30, 2021
The contact owns a 2006 Hummer H3. The contact stated while making a turn, he heard a loud abnormal popping sound coming from the rear of the vehicle. The contact stated that while inspecting the vehicle, he noticed that the rear leaf spring had detached from the subframe of the vehicle. The vehicle was not diagnosed or repaired by the dealer or independent mechanic. The manufacturer was made aware of the failure, and informed the contact that the VIN was not under recall. The approximate failure mileage was 140,000.
NHTSA ID
11427188
Incident
Feb 15, 2021
Mileage
140,000 mi
Interior & seats
Filed Apr 15, 2021
TL* THE CONTACT OWNS A 2006 HUMMER H3. THE CONTACT STATED THAT WHILE DRIVING AT AN UNDISCLOSED SPEED, THE HOOD INADVERTENTLY OPENED AND SHATTERED THE FRONT WINDSHIELD. THE VEHICLE WAS NOT REPAIRED. THE DEALER AND MANUFACTURER WERE NOT MADE AWARE OF THE FAILURE. THE CONTACT WAS RELATING THE FAILURE TO NHTSA CAMPAIGN NUMBER: 10V179000 (STRUCTURE). THE FAILURE MILEAGE WAS UNAVAILABLE.
NHTSA ID
11408213
Incident
Apr 13, 2021
Suspension
Filed Apr 2, 2021
I PUT IN 4HIGH LOCK FOR SNOW. I LATER PUT TRUCK IN 4 HIGH. IT FEELS AS IF IT'S STUCK IN 4HIGH LICK. I TOOK IT TO REPAIR SHOPS AND WAS TOLD IT'S THE 'PLASTIC FORK' ON THE TRANSFER CASE AND THIS IS A FAULTY PROBLEM. THE FOR WAS LATER CHANGED TO A METAL KNE BECAUSE OF THIS PROBLEM. IT SHOULD HAVE BEEN METAL IN THE FIRST PLACE. THIS IS AN EXPENSIVE COST AND I AM IN GREAT HOPES THAT THE MANUFACTURERS WILL HONOR THIS.
NHTSA ID
11406158
Incident
Mar 29, 2021
Mileage
117 mi
Airbags
Filed Mar 31, 2021
Crash reported1 injury reported
WE RECENTLY HAD TRANSMISSION COOLANT LINE REPLACED BY THE DEALER ABOUT 2 WEEKS AGO. LAST NIGHT, WHILE MY 17 YEAR OLD SON WAS DRIVING STRAIGHT ON A PAVED ROAD AT APPROXIMATELY 25MPH THE DRIVER AND PASSENGER SIDE AIRBAGS DEPLOYED FOR NO REASON. HE SUSTAINED A BURN ON HIS HAND FROM THE AIR BAG AS WELL AS NECK PAIN. AT THIS POINT HE HAS NOT NEEDED MEDICAL ATTENTION.
NHTSA ID
11405726
Incident
Mar 30, 2021
Mileage
113,000 mi
Engine
Filed Feb 7, 2021
P0305 CEL CODE CAME ON AND TOOK IT TO A MECHANIC. THEY DIAGNOSED THE ISSUE AND DID A COMPRESSION TEST WHICH PRODUCED RESULTS OF CYLINDER 5 HAVING 70 PSI AND THE OTHER CYLINDERS WERE NORMAL. DETERMINE THAT THE VALVES SEATS ARE BAD AND IT IS A COMMON ISSUE ON THE HUMMER H3. TOTAL COST FOR REPAIRS WAS PROJECTED TO BE $9,000 FOR ALL PARTS AND LABOR.
NHTSA ID
11395103
Incident
Jan 21, 2021
Mileage
105,498 mi
Suspension
Filed Feb 5, 2021
TL* THE CONTACT OWNS A 2006 HUMMER H3. THE CONTACT STATED WHILE DRIVING 10 MPH, THE CONTACT HEARD A POP FROM THE REAR PASSENGER'S SIDE OF THE VEHICLE. UPON INVESTIGATION, THE CONTACT ASSOCIATED THE FAILURE WITH THE LEAF SPRINGS. THE VEHICLE WAS AWAITING A TOW. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER HAD NOT BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 111,000.
NHTSA ID
11394868
Incident
Feb 5, 2021
Mileage
111,000 mi
Suspension
Filed Nov 30, 2020
WAS MAKING A RIGHT TURN,HEARD A LOUD POP WAS ABLE TO GET HOME.UPON INSPECTION THE REAR DRIVER SIDE LEAF SPRING FRACTURED.AFTER RESEARCHING THIS MUST BE AN ONGOING ISSUE,BUT NO RECALL.
NHTSA ID
11377123
Incident
Nov 27, 2020
Mileage
135,000 mi
Electrical
Filed Oct 24, 2020
THE IGNITION SWITCH IS STAKED AND IS NOT ABLE TO TURNING ON
NHTSA ID
11366168
Incident
Oct 24, 2020
Mileage
244,000 mi
Filed Jul 18, 2020
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
NHTSA ID
11340038
Incident
Jul 17, 2020
Mileage
150,000 mi
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
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