Hummer H3 Complaints (2007)

238 consumer complaints on file.

#11770352October 10, 2026
STRUCTURE:BODY, SERVICE BRAKES, SUSPENSION
i was driving my hummer on the highway about 45 miles an hour when i felt somthing poped and the back started to sway back and forth so i startted slowing down and i was all over the road came to a stop on side of the road looked underneath and my drivers side wheel was all the way back against the body looked up and the frame had broken off and the spring in back also broke off rusted and the so called frame was so thin no wander it rusted why so thin they should be held accountable for making unsafe frame like this if i would have been on interstate beside a semi or other cars im shure me and others would have lost our lives no doubt i am very pissed about this i got my friend to bring trailer hauld home so now what junk or what i want them to fix it and loaner why they do.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11748012July 2, 2026
ELECTRICAL SYSTEM
The contact owned a 2007 Hummer H3. The contact stated that while the vehicle was parked, the AC was turned on, and the contact became aware of smoke entering the cabin of the vehicle. The smoke was coming from the front passenger's side underneath the dashboard. The AC was turned off, and the smoke ceased. The contact exited the vehicle and went into the store. The contact exited the store and was informed by a shopper that the vehicle was on fire. The vehicle was unoccupied. The fire was coming from underneath the hood of the vehicle. The Fire Department arrived on the scene and extinguished the fire. The Fire Inspector informed the contact that the fire was a thermal event related to HVAC wiring. In addition, the contact was informed of an unknown recall; however, the VIN was not associated with a recall related to the failure. The vehicle was destroyed. The charred remains of the vehicle were towed to a local tow yard. A Police report was filed. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 197,000.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11664822June 4, 2025
ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER
Odometer Fraud. The contact purchased a 2007 Hummer H3. The contact discovered that there was a mileage discrepancy. The vehicle was an independent dealer sale. At the time of purchase, the vehicle mileage was 122,791 and at the time of registration, it was discovered that the mileage was 122,799 but additional documents also showed that the mileage was unchanged over a 3-year period.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11568962January 31, 2024
SUSPENSION
The problem was unknown to me and probably would be to any vehicle owner that is not a mechanic. I was driving a death trap and didn't know how easily it could have been a serious problem. The driver side leaf spring bracket had completely broke apart from the frame on the upper drive side corner in an area that without getting underneath the vehicle with a flashlight and specifically looking for would be impossible to see. The only reason I know about it now is because I took it for an inspection and it failed due to this structural defect which the technician informed me was a very common issue with the 2007 H3 vehicles. He said that if I had been on a highway at 65/70 mph and this thing broke completely free the axle would swing out behind the vehicle on the drive side and cause an uncontrollable crash that could lead to severe injury and possibly death
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11528330June 22, 2023
UNKNOWN OR OTHER
Louver hood vent cover flew off on the highway as I was driving.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11489526October 17, 2022
STRUCTURE
The contact owns a 2007 Hummer H3. The contact stated that while driving at various speeds, the hood louvers loosened without warning. Upon investigation, the contact discovered NHTSA Campaign Number: 10V179000 (Structure) which he linked to the failure. The dealer was notified of the failure and informed that the vehicle was already serviced prior under recall. The contact was provided an estimate for the repair. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 140,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483351September 7, 2022
FUEL/PROPULSION SYSTEM
I have the well known issue with the passkey security system. Nothing is wrong mechanically with the car but the security system will not allow the truck to start, therefore leaving me randomly leaving me stranded. Much has been documented on this issue, yet gm has never done a recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11476451July 29, 2022
STRUCTURE:BODY, UNKNOWN OR OTHER
So the part that is a malfunction is the rear doors weren’t made with any child lock and of course one of my kids opened the door while i was driving on the highway.I have a 3 and 5 year old and it scared me so bad I had to hurry and pull the hummer over and park and just held my son. I couldn’t even drive after that because of how bad it traumatized me. My mom had to come get and take me and my kids home and drive my hummer back home. Even though we didn’t crash or one of my kids didn’t fall out.it’s still a very serious safety hazard. I reached out to gm to see what my options were and there response was how gm made child locks in 2007 and up and that’s not the truth because mine is a 2007 and it clearly doesn’t have child locks. Then they later proceeded to tell me I should just sell my vehicle. I was so upset because if one of my kids would have fallen out and something happened I would do everything in my power to make sure they were held accountable and file a lawsuit against them. Yes The vehicle is available to inspect. My kids safety was at risk and then me braking and pulling off the highway in panic mode could have caused an accident.it’s been reported to gm and also local dealers. There was no warning just when it happened scared me so bad because my kids are in my back seat. The photos I uploaded are of the transcribed voicemails and I’m willing to also submit the voicemails from gm as well.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11442513December 3, 2021
STEERING
The (2) u-joints , upper and lower, in the steering column were failing and the front wheels would not return to straight. According to the shop that replaced the u-joints they had failed. This is the second H3 with the same problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11440677November 16, 2021
FUEL/PROPULSION SYSTEM
I bought my 2007 hummerh3 used w/124,000 miles. I've had it a month and already had it in mechanic shop due to not starting. The mechanic thought it was a fuel relay and charged me 258.00 parts/labor/tow. Today 11-16-21, only a day after I got it back, it stopped on me again!! Just had it towed again. Just learning that this is a common problem! Is anything being done to rectify this problem?
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11432617September 11, 2021
UNKNOWN OR OTHER
Sunroof leaks & drain's don't work , my heart wiring plug has melted , do to water my car worning lights all were flashing then dash lights & speedometer all crashed and soon as I parked would not start. I took a dehumidifier put it in the shop and dried it out then everything worked again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11421692June 21, 2021
VISIBILITY, ENGINE
The contact owns a 2007 Hummer H3. The contact stated while driving at 50 mph, the vehicle started to overheat and stalled. The contact stated the temperature and the check engine warning light were illuminated. The vehicle was then towed to a local dealer where it has yet to be diagnosed due to the battery needing to be replaced. The vehicle was not repaired. The contact had the vehicle serviced under NHTSA campaign number: 15V421000 (Visibility) prior to experiencing the failure. The manufacturer had not been informed of the failure. The failure mileage was approximately 160,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11408121April 14, 2021
ELECTRICAL SYSTEM
IGNITION SWITCH STAYS ON WITH KEY OFF AND OUT AND ALARM GOES OFF SOMETIMES JUST SITTING AND BATTERY GOES DEAD
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11391170February 2, 2021
ELECTRICAL SYSTEM, ENGINE, UNKNOWN OR OTHER
ON 3/13/2020 MY WIFE WAS DRIVING OUR 2007 HUMMER H3 WHEN THE ENGINE COMPARTMENT AND DASH AREA CAUGHT ON FIRE. THE BLOWER MOTOR CONNECTOR MODULE HAD BEEN REPLACED RECENTLY AS PART OF A SAFETY RECALL. THE VEHICLE WAS IN MOTION AND SHE HAD JUST MADE A LEFT TURN. ALTHOUGH THE PART HAD BEEN REPLACED, I STILL BELIEVE THAT THIS RECALL ISSUE WAS THE CAUSE OF SAID FIRE. THE FIRE DEPARTMENT CALLED IT AN ELECTRICAL ISSUE. THERE WAS NO WARNING AT ALL. THIS WAS TRAUMATIC FOR MY WIFE SHE HAD TO JUMP OUT OF THE VEHICLE AND HAD A MISCARRIAGE.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11388405January 16, 2021
ENGINE
VEHICLE MISFIRES FREQUENTLY. ENGINE WILL NEARLY STALL AT IDLE DUE TO MISFIRES AND SHAKE THE WHOLE VEHICLE. LACK OF POWER AND EFFICIENCY. AND JUDDERING WHILE ACCELERATING. IT IS KNOWN TO GM AND MANY PEOPLE HAVE HAD TO RESORT TO CYLINDER HEAD REPLACEMENTS COSTING HUNDREDS AT A MINIMUM.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11387388January 10, 2021
STRUCTURE:BODY
HOOD VENT IS LOOSE&COMING OFF.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11344113August 8, 2020
ELECTRICAL SYSTEM, ENGINE, UNKNOWN OR OTHER
OIL LIGHT COMES ON WHEN IDLE. TRUCK LOSES PRESSURE. NO DEALERSHIP SOLUTION.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11344114August 8, 2020
UNKNOWN OR OTHER
WITH NO WARNING LIGHTS OR SIGNS, H3 WOULDN'T ACCELERATE WHILE PRESSING THE GAS.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11330378June 23, 2020
VISIBILITY:SUN/MOON ROOF ASSEMBLY
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT WATER ENTERED THE VEHICLE FROM THE SUN ROOF ASSEMBLY. THE CONTACT STATED THAT WHILE VACUUMING WATER OUT OF THE VEHICLE, THE AIR BAGS IN THE VEHICLE DEPLOYED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE SUN ROOF DRAIN TUBES WERE CLOGGED WHICH FAILED TO DRAIN WATER AS INTENDED. THE VEHICLE WAS NOT REPAIRED. THE VEHICLE WAS TAKEN TO BOYLE BUICK GMC TRUCK (3015 EMMORTON RD, ABINGDON, MD 21009) WHERE THE DASHBOARD WAS TAKEN APART AND THE CONTACT WAS INFORMED THAT THE DRAIN LINES WERE DISCONNECTED. THE DRAIN LINES WERE CLEANED AND RECONNECTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND PROVIDED A CASE NUMBER. THE APPROXIMATE FAILURE MILEAGE WAS 57,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11327083June 3, 2020
POWER TRAIN
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT WHILE DRIVING, THE POWER REDUCTION AND STABILITY CONTROL WARNING LIGHTS ILLUMINATED. THE VEHICLE DECELERATED INDEPENDENTLY. THE VEHICLE WAS PULLED OVER AND RESTARTED. THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO JIM GLOVER CHEVROLET LOCATED AT 707 W 51ST ST, TULSA, OK 74107, WHERE A DIAGNOSTIC TEST WAS PERFORMED. THE TECHNICIAN DIAGNOSED THAT THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS TOWED AN INDEPENDENT MECHANIC WHO REBUILT THE TRANSMISSION. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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