NHTSA Owner Complaint Log
This page lists owner-reported complaints filed with NHTSA for the 2008 Hummer H3. Complaints are unverified consumer reports submitted to NHTSA and do not by themselves prove a defect or defect rate.
Data synced from NHTSA on May 4, 2026
MY BRAKES WENT OUT AND I ALMOST HAD 3 WRECKS. I WENT TO HAVE THE BRAKES CHECKED AND THEY FOUND NO PROBLEMS. BUT I AM NOW WORRIED THAT THEY WILL GO OUT AGAIN FOR NO REASON AND I MIGHT NOT BE AS LUCKY NEXT TIME. *TR
TL* THE CONTACT OWNS A 2008 HUMMER H3. THE CONTACT STATED WHILE ATTEMPTING TO TURN THE VEHICLE OFF THE KEY BECAME STUCK INSIDE THE IGNITION SWITCH AND THE CONTACT WAS UNABLE TO TURN THE VEHICLE OFF. THE VEHICLE WAS TAKEN TO THE DEALER BUT THE DEFECT COULD NOT BE DUPLICATED AND NO REPAIRS WERE PERFORMED. THE CONTACT STATED THAT THE DEFECT CONTINUED TO OCCUR. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 38,000.
SIDE AIR BAGS DEPLOYED WITHOUT CONTACT WITH ANYTHING. *TR
I HAVE A 2008 HUMMER H-3. ON NOVEMBER 3RD 2009 WHILE DRIVING ABOUT 30 MILES AN HOUR ON A SHARP LEFT CURVE, THERE WAS A LOUD CLUNK IN THE FRONT END AND THE TRUCK PULLED HARD TO THE RIGHT MAKING THE VEHICLE GO DOWN INTO THE DITCH. SEVERAL WEEK BEFORE THIS INCIDENT WHILE IN A PARKING LOT MAKING A SHARP LEFT TURN( LESS THAN A MILE PER HOUR) THERE WAS A REAL LOUD CLUNK IN THE FRONT PASSENGERS SIDE, THIS HAPPEN TWICE INCLUDING A WEEK BEFORE THE FAILURE. WHEN I CHECKED UNDER THE FRONT END I DID NOT SEE ANYTHING. THE VEHICLE WAS TAKEN TO THE HUMMER DEALER BUT THEY COULD NOT TELL IF ANYTHING FAILED. SOMETHING FAILED! THIS CAUSES ME GREAT CONCERN BECAUSE IF IT HAPPENED ON A MAIN HIGHWAY AND THE VEHICLE WENT INTO TRAFFIC, THAT WOULD NOT HAVE BEEN GOOD. PLEASE HELP ME FIND OUT WHAT WENT WRONG AS I DON'T THINK HUMMER IS GOING TO HELP! *TR
THE HARNESS WIRE LOCATED BETWEEN BODY AND REAR BUMPER RUBBED THROUGH ON BODY CAUSING RIGHT REAR TAIL LAMP BULB AND FUSE TO BLOW -- THIS OCCURRED AT MILEAGE 8146 ON MY 2008 HUMMER H3. HUMMER STATES ON THE PAPERWORK "REPAIRED HARNESS WIRE AND REPOSITION HARNESS; REPLACED BULB AND FUSE." *TR
The contact owns a 2008 Hummer H3. The contact stated that the vehicle intermittently failed to start up without warning. The contact stated that after waiting ten minutes the vehicle started. The contact stated that recently the failure had become more frequent. The contact had taken the vehicle to a dealer however, the mechanic was unable to determine the cause of the failure. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 1,000.
I WAS CUT OFF BY ANOTHER DRIVER IN RUSH HOUR TRAFFIC AND THE HORN FAILED TO OPERATE WHEN PRESSED. AFTER THIS INCIDENT, I DISCOVERED THAT THE HORN DOES NOT WORK AFTER THE VEHICLE IS DRIVEN EVERY FEW MILES! THE VEHICLE WAS IN THE SHOP FOR HOURS OF DIAGNOSIS, AND FINALLY IT WAS DISCOVERED BY THE TECHNICIAN THAT THE VEHICLE HAS A BAD "SIR COIL". THE "SIR COIL" IS ON SPECIAL ORDER. *TR
TL* THE CONTACT OWNS A 2008 HUMMER H3. WHEN THE CONTACT ATTEMPTED TO ENGAGE THE AIR CONDITIONER, IT WOULD NOT FUNCTION. THE DEALER REPLACED THE RESISTOR TO CORRECT THE FAILURE. THERE WERE NO PRIOR WARNINGS. THE CURRENT AND FAILURE MILEAGE WAS 17,000. UPDATED 08/06/10*JB
I OWN A BRAND NEW BASE MODEL 2008 HUMMER H3 NOT EVEN DONE 300KMS ON THE METER AND I HEAR AND FEEL A RATTLING SOUND UNDER THE GAS AND BRAKE PEDAL WHEN THE CAR TRAVELS 10 MILES OR SO OR WHEN ITS VERY HOT, I LIVE IN THE MIDDLE EAST DUBAI AND ITS ALWAYS HOT HERE... SO PLEASE ADDRESS THIS ISSUE I THINK ITS THE STEERING SHAFT,,,, AND FIND A SOLUTION THANKS. *TR
TRACTION FAILED, SERVICE STAB SYS, SERVICE 4WD, TRACTION LIGHT CONSTANTLY LIT, 4WD LIGHT NO LONGER LIT ON TRANSFER CASE. I HAVE OWNED THE VEHICLE FOR 11 WEEKS, AND THE VEHICLE HAS ALREADY BEEN BACK TO THE DEALERSHIP TWICE (APRIL AND MAY) FOR THESE PROBLEMS WHICH HAPPEN WHILE DRIVING IN RAIN. ONSTAR SAYS THAT THE ABS/TRACTION IS NOT WORKING PROPERLY AND VEHICLE NOW HAS TO GO BACK TO DEALERSHIP AGAIN (JUNE) FOR THE SAME PROBLEM. THE VEHICLE IS NOW ON THE THIRD 4WD SWITCH AND I ONLY HAVE 1344 MILES ON IT! *TR
DRIVING 08 HUMMER H3 DOWN CITY ROAD, HIT SECTION DUG UP AND COVERED WITH DIRT/GRAVEL; MEDIUM POTHOLE SIZES. GOING 20 MPH; SIDE AIR BAGS DEPLOYED. GM SAYS IT WAS SUPPOSED TO DO THAT.
TL*THE CONTACT OWNS A 2008 HUMMER H3. THE FRONT WINDSHIELD HAD SPOTS AND BUBBLES WHICH DOESN'T ALLOW THE CONTACT TO SEE THROUGH THE WINDSHIELD CLEARLY. THE CONTACT ALSO NOTICED THAT THE DRIVER SIDE SEAT WAS CRACKED ALONG THE BASE OF THE SEAT. THE CONTACT STATED THAT RUST SPOTS COMPLETELY COVERED THE EXTERIOR OF THE VEHICLE. THE VEHICLE HAS NOT BEEN DIAGNOSED BY THE DEALERSHIP. THE CURRENT AND FAILURE MILEAGES WERE 37550.
2008 HUMMER H3 ALPHA NUMEROUS PROBLEMS WITHIN THE FIRST 30-DAYS OF OWNERSHIP. ALIGNMENT REPAIR 3 TIMES, LEAKING BRAKE FLUID REPAIR, 2 TIMES, BELT REPLACED 2 TIMES. *TR