2007 Hummer H3 Owner Complaints

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.

NHTSA ID

11748012

Incident

Jul 1, 2026

Mileage

197,000 mi

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.

NHTSA ID

11664822

Incident

Jun 4, 2025

Mileage

122,799 mi

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

NHTSA ID

11568962

Incident

Dec 21, 2023

Louver hood vent cover flew off on the highway as I was driving.

NHTSA ID

11528330

Incident

Jun 22, 2023

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.

NHTSA ID

11489526

Incident

Feb 1, 2022

Mileage

140,000 mi

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.

NHTSA ID

11483351

Incident

Sep 7, 2022

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.

NHTSA ID

11476451

Incident

Jun 28, 2022

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.

NHTSA ID

11442513

Incident

Oct 29, 2021

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?

NHTSA ID

11440677

Incident

Nov 16, 2021

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.

NHTSA ID

11432617

Incident

Sep 11, 2021

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.

NHTSA ID

11421692

Incident

Jun 17, 2021

Mileage

160,000 mi

IGNITION SWITCH STAYS ON WITH KEY OFF AND OUT AND ALARM GOES OFF SOMETIMES JUST SITTING AND BATTERY GOES DEAD

NHTSA ID

11408121

Incident

Jan 2, 2021

Mileage

117,000 mi

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.

NHTSA ID

11391170

Incident

Mar 13, 2020

Mileage

110,000 mi

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.

NHTSA ID

11388405

Incident

Jan 12, 2021

Mileage

95,000 mi

HOOD VENT IS LOOSE&COMING OFF.

NHTSA ID

11387388

Incident

Jun 10, 2019

WITH NO WARNING LIGHTS OR SIGNS, H3 WOULDN'T ACCELERATE WHILE PRESSING THE GAS.

NHTSA ID

11344114

Incident

Aug 7, 2020

Mileage

180,000 mi

OIL LIGHT COMES ON WHEN IDLE. TRUCK LOSES PRESSURE. NO DEALERSHIP SOLUTION.

NHTSA ID

11344113

Incident

Aug 8, 2020

Mileage

179,000 mi

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.

NHTSA ID

11330378

Incident

Apr 17, 2020

Mileage

57,000 mi

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.

NHTSA ID

11327083

Incident

Sep 1, 2018

THE TUBULAR FRAME HAD WHAT LOOKS LIKE COLD SLUGS WELDS AT SEVERAL JOINT LOCATIONS THAT ALLOWED WATER TO ENTER AND RUST FROM THE INSIDE OUT. THE FRAME CAN BE PUSHED THROUGH WITH A FINGER. THE FRAME SPRINGS BROKE WHILE DRIVING DOWN THE ROAD DROPPING THE FUEL TANK THROUGH THE GAS TANK CAUSING A FIRE HAZARD.

NHTSA ID

11307856

Incident

Aug 22, 2019

Mileage

197,000 mi

TL* THE CONTACT OWNS A 2007 HUMMER H3. WHILE DRIVING 35 MPH, THE ENGINE OIL INDICATOR ILLUMINATED AND AN ODOR EMITTED FROM THE VEHICLE. THE CONTACT REPLACED THE OIL AND TOOK THE VEHICLE TO AN INDEPENDENT MECHANIC WHERE IT WAS DISCOVERED THAT THERE WAS A SMALL HOLE IN THE MANIFOLD, WHICH BURNED OUT THE OIL. THE CONTACT PAID OUT OF POCKET TO HAVE THE VEHICLE REPAIRED. THE MANUFACTURER WAS NOTIFIED AND FILED A CLAIM. THE CONTACT WAS REFERRED TO NHTSA TO FILE A COMPLAINT. THE DEALER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 120,000.

NHTSA ID

11292047

Incident

Dec 24, 2019

Mileage

120,000 mi

WENT OUT TO START H3, TURNED KEY, CHECK ENGINE LIGHT CAME ON, THE BATTERY LIGHT CAME ON AND THE ANTI-THEFT SYSTEM LIGHT CAME ON. PASSLOCK/SECURITY SYSTEM INSIDE THE STEERING COLUMN IS BAD. CAR WON'T START. IS UNSAFE AND WILL STRAND OWNER WITHOUT WARNING BY NOT STARTING. GOES INTO SECURITY MODE. WAS TOLD TO WAIT 10 MIN AND TRY AGAIN. CAN'T TURN IT OFF AT GAS PUMP FOR FEAR OF IT LOCKING ME OUT AND NOT STARTING. I HAD THIS HAPPEN TO ME 4 TIMES IN ONE DAY. SO MANY COMPLAINTS ALL OVER THE INTERNET AND PEOPLE TRYING TO FIX THIS ISSUE. THERE IS EVEN A COMPANY SELLING A PART TO BYPASS THIS AND THE SECURITY SYSTEM WHICH AGAIN IS ANOTHER ISSUE. GM IS CLEARLY AWARE OF THIS ISSUE. THIS NEEDS TO BE RECALLED. STRANDING PEOPLE CAN BE VERY DANGEROUS. IF THERE IS AN EMERGENCY AND THE CAR WON'T START. ALL AROUND BAD BUSINESS BY GM FOR NOT ISSUING THIS RECALL. THIS HAS NOTHING TO DO WITH MILEAGE WHICH GM MANAGER SAID ON THE PHONE. THESE H3'S ARE KNOW FROM THIS FRESH OFF THE DEALERSHIP FLOOR. PEOPLE ARE BEING FORCED TO TAKE IT TO A DEALERSHIP FOR REPAIR AND REPLACING THE PART WHEN THE LABOR COSTS MORE THAN THE PART. SEEM LIKE A MONOPOLY FOR GM AND ITS DEALERSHIPS. I HAVE SEEN ANYWHERE FROM 1500-2000.00 TO INSTALL AND RECTIFY THIS BAD PART AT THE GM DEALERSHIPS.

NHTSA ID

11290184

Incident

Dec 13, 2019

Mileage

135,000 mi

DRIVING DOWN THE ROAD AND IT STOP AND IT WOULD NOT START ENGINE LOCK UP

NHTSA ID

11289116

Incident

Dec 10, 2019

Mileage

160,000 mi

TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT THE ENGINE FAILED TO START. THE CONTACT HAD TO SIT IN THE VEHICLE AND WAIT A WHILE BEFORE ATTEMPTING TO START THE VEHICLE. THE FAILURE OCCURRED AT ANY GIVEN MOMENT AND WAS BECOMING MORE FREQUENT. IN ADDITION, THE PASS LOCK WARNING INDICATOR ILLUMINATED ON THE INSTRUMENT PANEL. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE CONTACT REPLACED THE MANIFOLD AND WAS REIMBURSED. THE FAILURE MILEAGE WAS 84,822. THE VIN WAS UNKNOWN.

NHTSA ID

11245758

Incident

Aug 15, 2019

Mileage

84,822 mi

TL* THE CONTACT OWNS A 2007 HUMMER H3. WHILE DRIVING APPROXIMATELY 15 MPH, THE FRONT DRIVER'S AIR BAG DEPLOYED WITHOUT IMPACT OR WARNING. THERE WERE NO INJURIES. THE CONTACT DROVE THE VEHICLE TO HIS RESIDENCE. THE VEHICLE WAS LATER DRIVEN TO AUTONATION BUICK GMC HENDERSON (702-979-2044, LOCATED AT 330 NORTH GIBSON ROAD, HENDERSON, NV 89014). THE DEALER STATED THAT THERE WAS NO RECALL FOR THE VEHICLE AND PROVIDED THE CONTACT WITH A REPAIR QUOTE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND PROMISED TO LOOK INTO THE MATTER AND CALL THE CONTACT BACK. THE CONTACT WAS NOT CALLED BACK. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 186,000.

NHTSA ID

11242037

Incident

Jul 20, 2019

Mileage

186,000 mi