EXHAUST MANIFOLD BOLTS ARE BREAKING OFF THE BLOCK!. *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.
Engine complaints
44 reportsTHE RADIATOR DEVELOPED A STRESS CRACK AND SUBSEQUENTLY FAILED. DEALER ADVISES THIS IS A COMMON PROBLEM FOR THIS MAKE AND MODEL AND THEY STOCK REPAIR PART ACCORDINGLY. DEALER ADVISED TO REPORT INCIDENT AND ENOUGH REPORTS MAY PROMPT SPECIAL SERVICE REPAIR OR RECALL. *TR
I AM THE ORIGINAL OWNER OF A 2007 GENERAL MOTORS HUMMER H3. THE AUTO HAS BEEN WELL MAINTAINED AND PROFESSIONALLY SERVICED BY A GM DEALERSHIP. THE VEHICLE HAS 53,600 MILES AND IS IN PERFECT MECHANICAL CONDITION EXCEPT THIS RECENT ISSUE WITH PASSLOCK SECURITY WHICH HAS RENDERED THE VEHICLE UNRELIABLE AND A PERSONAL AND PUBLIC SA…
Read full complaint
I AM THE ORIGINAL OWNER OF A 2007 GENERAL MOTORS HUMMER H3. THE AUTO HAS BEEN WELL MAINTAINED AND PROFESSIONALLY SERVICED BY A GM DEALERSHIP. THE VEHICLE HAS 53,600 MILES AND IS IN PERFECT MECHANICAL CONDITION EXCEPT THIS RECENT ISSUE WITH PASSLOCK SECURITY WHICH HAS RENDERED THE VEHICLE UNRELIABLE AND A PERSONAL AND PUBLIC SAFETY HAZARD. THE VEHICLE IS LESS THAN 30 DAYS OUT OF WARRANTY AND DEALER WILL NOT REPAIR UNDER WARRANTY. IN RECENT WEEKS, THE PASSLOCK SECURITY LIGHT BEGAN RANDOMLY ILLUMINATING WHILE DRIVING. THIS LIGHT COULD EXTINGUISH ON NEXT START OR STAY ILLUMINATED THROUGH SEVERAL STARTS. TWO WEEKS AGO WHILE RETURNING FROM A TRIP LATER AT NIGHT, THE VEHICLE WAS DISABLED AND FAILED TO START IN AN AIRPORT PARKING LOT. THE PASSLOCK LIGHT CONTINUALLY FLASHED AND THE ENGINE CRANKED, BUT WITHOUT STARTING. A TOW TRUCK WAS CALLED, BUT BY THE TIME IT ARRIVED, AN ATTEMPT TO START THE VEHICLE WAS SUCCESSFUL AND THE LIGHT WAS EXTINGUISHED. THIS HAS HAPPENED AT LEAST TWICE SINCE IN LESS INCONVENIENT AND LESS DANGEROUS AREAS. THE VEHICLE IS UNRELIABLE AND UNSAFE. I CANNOT TRUST IT TO ALLOW MY WIFE TO DRIVE IT FOR FEAR IF HER BEING MAROONED IN A DANGEROUS SITUATION. THE DEALER HAS INDICATED IT MIGHT BE SEVERAL HUNDRED DOLLARS TO REPAIR THIS PROBLEM AND WAS WELL AWARE THAT IT WAS A WIDESPREAD PROBLEM WITH GM AUTOS. THERE ARE HUNDREDS OF SIMILAR COMPLAINTS ON THE INTERNET AND YET THERE IS NO RESPONSE OR ATTEMPT TO REMEDY THIS SITUATION BY THE MANUFACTURER. I AM A SENIOR CITIZEN AND NEED TO RELY ON MY VEHICLE, BUT CANNOT RELY ON A VEHICLE WHOSE SECURITY SYSTEM CAN DISABLE THE VEHICLE AT ANY RANDOM TIME. AS MY REPRESENTATIVE, I REQUEST THE NHTSA ADDRESS THIS WITH THE MANUFACTURER AND REMEDY THIS SAFETY CONCERN. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT WAS TRAVELING 40 MPH WHEN WHITE STEAM EMITTED FROM THE ENGINE. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC. THE MECHANIC CONFIRMED THAT THE RADIATOR SEAL WAS CRACKED. THE MANUFACTURER WAS CONTACTED. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 65,370 AND THE CURRENT MILEAGE…
Read full complaint
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT WAS TRAVELING 40 MPH WHEN WHITE STEAM EMITTED FROM THE ENGINE. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC. THE MECHANIC CONFIRMED THAT THE RADIATOR SEAL WAS CRACKED. THE MANUFACTURER WAS CONTACTED. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 65,370 AND THE CURRENT MILEAGE WAS 77,000.
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.
Illustration