NOTICED RADIATOR FLUID DRIPPING UNDERNEATH VEHICLE. OPENED THE HOOD AND FOUND RADIATOR COOLANT HAD BEEN BLOWN ALL OVER INTERIOR ENGINE COMPARTMENT. ENOUGH COOLANT REMAINED IN THE RESERVOIR TO PREVENT OVERHEATING. I NOTICED THE INCIDENT JUST IN TIME. *TR
2007 Hummer H3
Owner reports · Recalls · Investigations
More warning signs than most H3 years
Owner complaints for the 2007 Hummer H3 are substantially higher than the model-year median of 91.
About this comparison →How this year compares
Owner complaints by model year
Compare all H3 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
192 reports with mileage · 45 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 76 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 44 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Visibility/wiper. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
237 reportsTL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT THE VEHICLE FAILED TO START AND THE SECURITY WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE TECHNICIAN WAS UNABLE TO DETERMINE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILUR…
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TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT THE VEHICLE FAILED TO START AND THE SECURITY WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE TECHNICIAN WAS UNABLE TO DETERMINE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 85,000.
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED WHILE ATTEMPTING TO START THE VEHICLE, THE PASS LOCK DISABLING SYSTEM LIGHT ILLUMINATED AND PREVENTED THE VEHICLE FROM BEING STARTED. THE CONTACT HAD TO WAIT APPROXIMATELY 10 MINUTES FOR THE VEHICLE TO SUCCESSFULLY RESTART. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOST…
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TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED WHILE ATTEMPTING TO START THE VEHICLE, THE PASS LOCK DISABLING SYSTEM LIGHT ILLUMINATED AND PREVENTED THE VEHICLE FROM BEING STARTED. THE CONTACT HAD TO WAIT APPROXIMATELY 10 MINUTES FOR THE VEHICLE TO SUCCESSFULLY RESTART. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING. THE TECHNICIAN WAS UNABLE TO DUPLICATE OR DIAGNOSE THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 100,000.
I HAVE A 2007 H3 HUMMER WITH 81000 MILES. THIS PAST SUMMER I GOT INTO MY TRUCK AND PUT ON MY AIR CONDITIONING ON HIGH. NOTHING CAME OUT OF THE VENTS. BLOWER MOTOR WOULDN'T EVEN MOVE. I DID SOME RESEARCH ON THE TOPIC AND IT ALL LEAD TO A BURNT OUT BLOWER MOTOR RESISTER. I HAD PURCHASED A NEW ONE AND REPLACED IT TO FIND OUT THAT T…
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I HAVE A 2007 H3 HUMMER WITH 81000 MILES. THIS PAST SUMMER I GOT INTO MY TRUCK AND PUT ON MY AIR CONDITIONING ON HIGH. NOTHING CAME OUT OF THE VENTS. BLOWER MOTOR WOULDN'T EVEN MOVE. I DID SOME RESEARCH ON THE TOPIC AND IT ALL LEAD TO A BURNT OUT BLOWER MOTOR RESISTER. I HAD PURCHASED A NEW ONE AND REPLACED IT TO FIND OUT THAT THERE WAS A SMALL FIRE IN THE PLUG FROM IT GETTING TO HOT. THIS IS A COMMON PROBLEM WITH THE H3. I TALKED TO GM SAFETY AND THEY WON'T DO ANYTHING AND BOUT IT BECAUSE IT'S OUT OF WARRANTY DUE TO AGE AND MILES. THERE IS NO REASON FOR THIS NOT TO BE A RECALL ISSUE. NO BLOWER MOTOR MEANS NO DEFROST ON YOUR WINDSHIELD. DUE TO COLD WINTERS IN NEW YORK YOU NEED THE DEFROST. NOW MY TRUCKS BLOWER MOTOR WORKS WHEN IT WANTS TO DUE TO FAULTY WIRE HARNESS IN TRUCK. I HAVE PICTURES OF THE PLUG AND OLD RESISTER. THANK YOU *TR
AIR BLOWER FOR AIR CONDITIONING AND HEATER STOPPED WORKING BECAUSE MELTED PLASTIC ON RESISTOR ALSO FRIED WIRING AND HARNESS NEEDED TO BE REPLACED. *TR
MY SON WAS DRIVING HIS 2007 HUMMER H3 WHEN IT CAUGHT ON FIRE. IT WAS AN ELECTRICAL FIRE STARTED ON THE PASSENGER SIDE IN THE DASH. HE DIDN'T KNOW IT WAS ON FIRE UNTIL HE GOT OUT OF THE CAR TO GO INTO A RESTAURANT. HE DIDN'T EVEN SMELL ANYTHING BURNING AND HAD ONLY BEEN DRIVING AROUND 5 MINUTES. PEOPLE WERE POINTING AT HIS CAR …
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MY SON WAS DRIVING HIS 2007 HUMMER H3 WHEN IT CAUGHT ON FIRE. IT WAS AN ELECTRICAL FIRE STARTED ON THE PASSENGER SIDE IN THE DASH. HE DIDN'T KNOW IT WAS ON FIRE UNTIL HE GOT OUT OF THE CAR TO GO INTO A RESTAURANT. HE DIDN'T EVEN SMELL ANYTHING BURNING AND HAD ONLY BEEN DRIVING AROUND 5 MINUTES. PEOPLE WERE POINTING AT HIS CAR TELLING HIM IT WAS ON FIRE. THE LOCAL FIRE DEPARTMENT GOT TO HIM IN 3-4 MINUTES. THE HUMMER H3 WAS TOTALED OUT BECAUSE OF THE FIRE. THE CAR HAD APPROXIMATELY 64,000 MILES ON IT AND WAS IN EXCELLENT CONDITION. *TR
JUST HAD MY HUMMER IN 2 WEEKS AGO AT THE GM DEALERSHIP TO HAVE THE IGNITION SWITCH REPLACED. HAD BEEN DEALING WITH IT STRANDING ME AND MY KIDS FOR 10 MINUTE PERIODS LONG ENOUGH. ( SOMETIMES LONGER) WHILE IT WAS IN THERE WE ALSO HAD TO GET THE RADIATOR REPLACED DUE TO IT BEING CRACKED. NOW 2 WEEKS LATER MY CHECK ENGINE LIGHT AND …
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JUST HAD MY HUMMER IN 2 WEEKS AGO AT THE GM DEALERSHIP TO HAVE THE IGNITION SWITCH REPLACED. HAD BEEN DEALING WITH IT STRANDING ME AND MY KIDS FOR 10 MINUTE PERIODS LONG ENOUGH. ( SOMETIMES LONGER) WHILE IT WAS IN THERE WE ALSO HAD TO GET THE RADIATOR REPLACED DUE TO IT BEING CRACKED. NOW 2 WEEKS LATER MY CHECK ENGINE LIGHT AND TRACTION LIGHT HAVE COME ON. THE TRACTION LIGHT SAYING SERVICE SAB SYSTEM. AFTER READING ALL THE HUMMER PROBLEMS I CAN NOT BELIEVE THAT THERE WAS NOT A RECALL ON BOTH THE IGNITION SWITCH AND RADIATOR. THE IGNITION SWITCH BEING FAULTY PUT ME AND MY KIDS IN SITUATIONS IN PLACES FOR LONG PERIODS OF TIME THAT WERE NOT SAFE AND AT TIMES WE WERE VERY COLD SINCE WE CAN HAVE BELOW ZERO WEATHER IN COLORADO. THE IGNITION NOT RECOGNIZING THE KEY CAUSING THE ANTI THEFT SYSTEM TO ACTIVATE IS RECALL ISSUE AND GM YOU SHOULD BE TAKING RESPONSIBILITY FOR THIS!! *TR
THE CAR SHUT OFF AS I WAS MAKING A LEFT HAND TURN WITH NO WARNING OR INDICATION. COMPLETE LOSS OF POWER. *TR
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT WHENEVER THE AIR CONDITIONER OR HEATER WAS TURN ON, BURNING WIRE FUMES WOULD EMIT INTO THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN DIAGNOSED THAT RESISTOR NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED BUT THE FAILURE RECURRED. THE VEHICLE WAS T…
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TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT WHENEVER THE AIR CONDITIONER OR HEATER WAS TURN ON, BURNING WIRE FUMES WOULD EMIT INTO THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN DIAGNOSED THAT RESISTOR NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHO REPLACED THE BLOWER AND THE WIRE HARNESS THAT HAD MELTED. THE FAILURE RECURRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE ISSUE. THE APPROXIMATE FAILURE MILEAGE WAS 40,000.
CONTINUOUS PROBLEMS WITH VEHICLE SHUTTING DOWN AND OR NOT STARTING WITH FAULTY PASSLOCK II SYSTEM..... ........ OWNERS MANUAL SAYS TO WAIT 10-15 MIN BUT KEEPS HAPPENING INTERMITTENTLY 4 TIMES ON 9-9-14 PROBLEM IS WORSENING BY THE WEEK. *TR
Official recalls
215V421000 · Visibility:defroster/defogger/hvac System:fan/motor
Jul 1, 2015
General Motors LLC (GM) is recalling certain model year 2006-2010 Hummer H3 vehicles manufactured February 5, 2005, to May 24, 2010, and 2009-2010 Hummer H3T vehicles manufactured May 21, 2008, to May 24, 2010. In the affected vehicles, the connector module that controls the blower motor speed for the heating, ventilation and air conditioning system may overheat.
Consequence & remedy
Consequence: If the blower motor connector module overheats, it can increase the risk of a fire.
Remedy: GM will notify owners, and dealers will replace part of the blower motor connector and harness, free of charge. The recall began February 26, 2016. Owners may contact Hummer customer service at 1-800-732-5493. GM's number for this recall is 15042.
10V179000 · Structure:body:hood
Apr 30, 2010
GM IS RECALLING CERTAIN MODEL YEAR 2006 THROUGH 2010 HUMMER H3 VEHICLES. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH THE INTEGRAL CLIP-TABS ON THE LOUVER ON THE HOOD MAY FRACTURE, CAUSING THE HOOD LOUVER RATTLE AGAINST THE HOOD AND BECOME LOOSE. IF THIS INDICATOR IS UNNOTICED, ADDITIONAL CLIPS COULD FRACTURE AND THE HOOD LOUVER COULD DETACH FROM THE VEHICLE.
Consequence & remedy
Consequence: IF THE VEHICLE IS BEING DRIVING WHEN THIS OCCURS, IT COULD STRIKE A FOLLOWING VEHICLE AND CAUSE INJURY AND/OR PROPERTY DAMAGE.
Remedy: DEALERS WILL APPLY AN ADHESIVE TO THE HOOD LOUVER TO SECURE IT TO THE HOOD. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON APRIL 12, 2010. OWNERS MAY CONTACT HUMMER AT 800-732-5493 OR AT THE OWNER CENTER AT WWW.GMOWNERCENTER.COM.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.
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