There are 4 owner-reported suspension complaints for the 2007 Hummer H3in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
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
ABS FAULT , TRACTION FAILED, STAB SYSTEM MY CAR STARTED DRIVING FUNNY AND I ALMOST LOST CONTROL
TL* THE CONTACT OWNS A 2007 HUMMER H3. WHILE DRIVING 30 MPH, AN UNKNOWN CLANKING NOISE WAS HEARD FROM THE REAR PASSENGER SIDE OF THE VEHICLE. THE FAILURE RECURRED CONSTANTLY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 134,000.
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT WHEN MAKING A RIGHT TURN, THE VEHICLE WOULD MAKE A HARD PUMPING SOUND. THE DEALER DIAGNOSED NO FAILURE WITH THE VEHICLE, BUT THE CONTACT BELIEVES THERE WAS AN AXLE ISSUE. THE MANUFACTURER WAS NOT CONTACTED AND THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 36,500 AND THE CURRENT MILEAGE WAS 37,000. THE VIN WAS UNAVAILABLE.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026