HUMMER Complaints

View complaints related to HUMMER. The complaints found here are submitted by actual consumers with first hand experience. You can submit your own complaint to the NHTSA or call the Hotline, Monday-Friday 8am to 8pm at (888) 327-4236, TTY: (800) 424-9153.

  • 2007 HUMMER H3
    - WALTERBORO, SC

    TL* THE CONTACT OWNS A 2007 HUMMER H3. WHILE ATTEMPTING TO START THE VEHICLE, THE STARTER FAILED TO START THE VEHICLE. AFTER THE FIRST ATTEMPT TO START THE VEHICLE, THE CONTACT HAD TO WAIT UP TO TEN MINUTES BEFORE ATTEMPTING TO START THE VEHICLE AGAIN. THE FAILURE RECURRED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 121,642.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2006 HUMMER H3
    - CHESAPEAKE, OH

    TL* THE CONTACT OWNS A 2006 HUMMER H3. THE CONTACT STATED THAT THE STRUCTURAL FRAME COMPLETELY RUSTED. ALSO, THE LEAF SPRINGS WERE FRACTURED, WHICH WERE A MAJOR PART OF THE VEHICLE'S STRUCTURE AND COULD DAMAGE THE WHEEL. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE VIN AND FAILURE MILEAGE WERE UNKNOWN.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2005 HUMMER H2
    - DETROIT, MI

    THERE IS A LEAK CAUSED BY THE TUBES CHANNELING WATER FROM THE SUNROOF. DURING HEAVY RAINS WATER POOLS ON THE DRIVER AND PASSENGER SIDE FLOOR.

    Source: NHTSA WEB SITE
  • 2007 HUMMER H3
    - TRABUCO CANYON, CA

    SEVERAL TIMES, WHILE PARKED, THE PASSLOCK SECURITY SYSTEM WILL RANDOMLY DISABLES THE ENGINE FROM STARTING. AFTER WAITING 10 MINUTES THE SYSTEM WILL ALLOW THE VEHICLE TO START. THIS MAKES STARTING THE VEHICLE IN AN EMERGENCY VERY UNRELIABLE AND DANGEROUS.

    Source: NHTSA WEB SITE
  • 2004 HUMMER H2
    - HYDEN, KY

    I WAS DRIVING HOME AT NIGHT AND ABOUT A MILE BEFORE I GOT HOME MY TRANSMISSION DIDN'T SEEM TO SHIFT AS SMOOTH AS IT USUALLY DOES AND WHEN I PARKED IN MY GARAGE I GOT OUT AND TRANSMISSION FLUID WAS DRIPPING OUT FROM UNDER MY H2 VERY QUICKLY AND BY THE NEXT HOUR IT HAD EVERY BIT RUN OUT AND HUGE PUDDLE OF TRANSMISSION FLUID WAS ALL OVER MY GARAGE FLOOR. I TOOK THE SKID PLATE OFF MY H2 AND THE TRANSMISSION LINE HAD A HOLE RUSTED THROUGH IT. HAD I BEEN ANOTHER FEW MILES AWAY FROM GETTING HOME THIS COULD HAVE DESTROYED MY TRANSMISSION AND POSSIBLY CAUSED ME TO WRECK.

    Source: NHTSA WEB SITE
  • 2006 HUMMER H3
    - SPRING, TX

    TL* THE CONTACT OWNS A 2006 HUMMER H3. WHILE DRIVING AT AN UNKNOWN SPEED, THE CHECK ENGINE WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE SECOND CYLINDER WAS MISFIRING AND THE HEAD GASKET AND/OR CYLINDER NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 70,000. THE VIN WAS UNAVAILABLE.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2004 HUMMER H2
    - JACKSONVILLE, FL

    I HAVE A 2004 HUMMER H2, THE ENTIRE INSTRUMENT PANEL MALFUNCTIONS.. FUEL GAUGE, SPEEDOMETER, OIL GAUGES .KEYLESS ENTRY WILL NOT WORK,ETC. REDUCED ENGINE POWER MESSAGE APPEARS AND VEHICLE AUTOMATICALLY SLOWLY REDUCING SPEED TO 15 MILES PER HR WHILE DRIVING AT HIGH SPEED. AIR BAG LIGHT WILL NOT SHUT OFF. THESE ISSUES ARE A SAFETY HAZARD AND I WOULD APPRECIATE ASSITANCE AND RESULUTION AS SOON AS POSSIBLE. THIS TRUCK HAS LESS THAN 75,000 MILES AND HAS BEEN WELL MAINTAINED. .

    Source: NHTSA WEB SITE
  • 2006 HUMMER H3
    - CENTREVILLE, VA

    APPROXIMATELY AT 150,000 MILES, WHILE MAKING A DELIVERY AT THE COUNTY DISPOSAL FACILITY, WHILE MOVING SLOWLY AND PARKING AT EACH STATION, THE ENGINE STARTED CUTTING OFF AND IDLING VERY POORLY, SLIGHTLY KNOCKING. I MADE IT HOME CHECKED THE OIL' WHICH READ LOW, SO I CHANGED THE OIL, OVER 5 QUARTS REMOVED, IT ONLY REQUIRES 6 QTS MAX, AND I REPLACED IT WITH 5 QUARTS OF FULL SYNTHETIC, WITH BG CLEANERS. INITIALLY IT STARTED, IDLED, AND RAN BETTER BUT AFTER 30 MINUTES THE ENGINE KNOCKS RESUMED. THE NEXT DAY I TOOK IT TO MY MECHANIC, HE ASSESSED AND DIAGNOSED IT, CONCLUDING THAT THE ENGINE WAS BAD AND NEEDED REPLACING. I HAD IT THAT CONFIRMED WITH ANOTHER MECHANIC. WENT ON THE HUMMER FORUM BLOGS AND READ MANY SIMILAR COMPLAINTS ABOUT THE ENGINE AND PISTONS WARPING OR DYING BETWEEN 75K-150K. MOST BLAMING GM FOR PUTTING IN DEFECTIVE PISTONS OR AND UNDERSIZED ENGINE 3.5L IN A HEAVY ALL 4 WHEEL DRIVE VEHICLE? NOT SURE WHERE TO GO FROM HERE, A USED OR REFURBISHED ENGINE IS $2500-$3500, WITH INSTALLATION ANOTHER$3000-$3500? I'M NOT SURE IF IT'S WORTH THE STEEP INVESTMENT?

    Source: NHTSA WEB SITE
  • 2008 HUMMER H3
    - FLINT, MI

    TL* THE CONTACT OWNS A 2008 HUMMER H3. WHILE DRIVING APPROXIMATELY 27 MPH, THE ABS, FOG, TRACTION, AND TPM INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO A DEALER WHO STATED THAT MORE TIME WAS NEEDED TO DIAGNOSE THE FAILURE. THE CONTACT DID NOT WANT TO PAY THE DIAGNOSTIC FEE WITHOUT CHECKING TO SEE IF THE VEHICLE WAS INCLUDED IN A RECALL. THE FAILURE RECURRED, BUT THE VEHICLE WAS NOT DIAGNOSED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT THERE WAS A RECALL. THE CONTACT STATED THAT NHTSA CAMPAIGN NUMBER: 15V421000 (VISIBILITY) DID NOT ADDRESS THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 70,500.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2005 HUMMER H2
    - TACOMA, WA

    CAR WILL NOT START DUE TO PASS-LOCK OR OTHER MALFUNCTION COMPONENT. MUST TRY AND FAIL AND THEN WAIT FOR CAR TO 'RE-SET' EACH AND EVERY TIME THE VEHICLE IS TRIED TO BE STARTED. AFTER 10 MINUTES THE CAR'S ENGINE COMPLETELY KILLS, EVEN IF CAR IS IN MOTION. REPROGRAMMED KEYS AND THIS ONLY WORKED FOR A WEEK. NOW EACH AND EVERY DOOR LOCK, BACK HATCH LOCK, ETC... HAS FAILED. THE HATCH IS LOCKED CLOSED AND THE DOORS WILL ONLY UNLOCK OR LOCK PHYSICALLY WITH YOUR HAND. THE SPEEDOMETER FAILS INTERMITTENTLY, ALONG WITH OTHER GAUGES WORKING ONLY SOMETIMES.

    Source: NHTSA WEB SITE