NHTSA owner reports · September 18, 2026 snapshot.
Power Train complaints
19 reportsClear category filterMileage unknown · Jun 3, 2020
Power Train
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT WHILE DRIVING, THE POWER REDUCTION AND STABILITY CONTROL WARNING LIGHTS ILLUMINATED. THE VEHICLE DECELERATED INDEPENDENTLY. THE VEHICLE WAS PULLED OVER AND RESTARTED. THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO JIM GLOVER CHEVROLET LOCATED AT 707 W 51ST ST, TULSA,…
Read full complaint
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT WHILE DRIVING, THE POWER REDUCTION AND STABILITY CONTROL WARNING LIGHTS ILLUMINATED. THE VEHICLE DECELERATED INDEPENDENTLY. THE VEHICLE WAS PULLED OVER AND RESTARTED. THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO JIM GLOVER CHEVROLET LOCATED AT 707 W 51ST ST, TULSA, OK 74107, WHERE A DIAGNOSTIC TEST WAS PERFORMED. THE TECHNICIAN DIAGNOSED THAT THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS TOWED AN INDEPENDENT MECHANIC WHO REBUILT THE TRANSMISSION. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.
NHTSA ODI #11327083
Mileage unknown · Mar 16, 2018
EngineEngine And Engine CoolingEquipment
2007 HUMMER H3. CONSUMER WRITES SEEKING REIMBURSEMENT FOR REPAIRS DONE PRIOR TO SAFETY RECALL BEING ISSUED. *LD *JS
NHTSA ODI #11023229
114,000 miles · Mar 2, 2017
Power TrainSteering
TL* THE CONTACT OWNS A 2007 HUMMER H3. WHILE MAKING A RIGHT TURN AT 35 MPH THE STEERING WHEEL BECAME DIFFICULT TO MANEUVER WITHOUT WARNING. THE CONTACT PULLED OVER AND DISCOVERED THAT THE POWER STEERING FLUID CAP FAILED TO REMAIN SECURE AND CAUSED THE POWER STEERING FLUID TO SPEW OUT. THE CAP WAS SECURED, BUT THE FAILURE RECURRE…
Read full complaint
TL* THE CONTACT OWNS A 2007 HUMMER H3. WHILE MAKING A RIGHT TURN AT 35 MPH THE STEERING WHEEL BECAME DIFFICULT TO MANEUVER WITHOUT WARNING. THE CONTACT PULLED OVER AND DISCOVERED THAT THE POWER STEERING FLUID CAP FAILED TO REMAIN SECURE AND CAUSED THE POWER STEERING FLUID TO SPEW OUT. THE CAP WAS SECURED, BUT THE FAILURE RECURRED CONTINUOUSLY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 114,000. UPDATED 05/02/17*LJ THE CONSUMER STATED SHE PURCHASED A POWER STEERING CAP. UPDATED 05/26/2017 *JS
NHTSA ODI #10958003
78,000 miles · Dec 26, 2016
Electronic Stability Control (esc)Power TrainStructure
RADIATOR LEAKING, HOOD VENT COMING UP, A/C CONTROL PANEL LIGHTS ARE NO LONGER WORKING
NHTSA ODI #10937448
103,306 miles · May 4, 2016
EnginePower Train
THE VEHICLE JUST LOST POWER AND ALMOST LOST IGNITION WHILE DRIVING 50 MILES AN HOUR. DIAGNOSTIC CODE STATE, MISFIRE IN CYLINDER ONE. VALVE SPRINGS ( ROCKER ARM) ARE BREAKING PREMATURELY CAUSING A LEAKING VALVE PROBLEM. MECHANIC ALSO NOTICED OTHER SPRINGS WERE FATIQUED CAUSING A LOOSER THAN NORMAL SEATING. GM SERVICE MANAGER MEN…
Read full complaint
THE VEHICLE JUST LOST POWER AND ALMOST LOST IGNITION WHILE DRIVING 50 MILES AN HOUR. DIAGNOSTIC CODE STATE, MISFIRE IN CYLINDER ONE. VALVE SPRINGS ( ROCKER ARM) ARE BREAKING PREMATURELY CAUSING A LEAKING VALVE PROBLEM. MECHANIC ALSO NOTICED OTHER SPRINGS WERE FATIQUED CAUSING A LOOSER THAN NORMAL SEATING. GM SERVICE MANAGER MENTION A SPRING PROBLEM ON 2006 2007 RENDEVOUS. ONE OF THE LARGEST COMPLAINTS WITH THE HUMMER 3 IS THIS LEAKY VALVE SYNDROM WHICH THE DEALERS KNOW ABOUT. SOME OCCURING WITH THE VEHICLE HAVING ONLY 30,000 PLUS MILES.
NHTSA ODI #10863255
Mileage unknown · Mar 14, 2016
Electronic Stability Control (esc)EnginePower Train
FIRST THE ENTIRE COMPUTER SYSTEM STOPPED WORKING. HAD TO REPLACE THR PCM. THEN MY BLOWER STARTED THROWING HOT AIR WHEN ON COLD. HAD TO INSTALL SEPARATE TO RESOLVE THAT ISSUE. HAD TO RE-BUILD THE TRANSMISSION TWICE DUE TO LEAK OF COOLANT INTO THE TRANSMISSION. THIS TRUCK HAS BEEN A NIGHTMARE SO FAR.
NHTSA ODI #10849661
94,000 miles · Dec 7, 2015
EnginePower Train
REBUILT TRANSMISSION TWICE CLEANED THROTTLE BODY REPLACED EXHAUST MANIFOLD TWO O2 SENSORS REPLACED THE RADIATOR THE HEATER CORE A FUEL PUMP RELAY AND THIS ENGINE LIGHT STILL WILL NOT TURN OFF IT SAYS TORQUE CONVERTER CLUTCH SOLENOID I'M DISGUSTED ALREADY GM FIX UR [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMA…
Read full complaint
REBUILT TRANSMISSION TWICE CLEANED THROTTLE BODY REPLACED EXHAUST MANIFOLD TWO O2 SENSORS REPLACED THE RADIATOR THE HEATER CORE A FUEL PUMP RELAY AND THIS ENGINE LIGHT STILL WILL NOT TURN OFF IT SAYS TORQUE CONVERTER CLUTCH SOLENOID I'M DISGUSTED ALREADY GM FIX UR [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
NHTSA ODI #10808871
53,018 miles · Dec 23, 2014
Engine And Engine CoolingPower Train
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
NHTSA ODI #10668018
119,000 miles · Aug 20, 2014
Electrical SystemPower Train
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED WHILE TRAVELING APPROXIMATELY 25 MPH, THE VEHICLE STALLED. THE CONTACT WAS NOT ABLE TO RESTART THE VEHICLE. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER. THE TECHNICIAN DIAGNOSED THAT THE PCM NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. IN ADDITION, THE KEY BECAME LO…
Read full complaint
TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED WHILE TRAVELING APPROXIMATELY 25 MPH, THE VEHICLE STALLED. THE CONTACT WAS NOT ABLE TO RESTART THE VEHICLE. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER. THE TECHNICIAN DIAGNOSED THAT THE PCM NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. IN ADDITION, THE KEY BECAME LODGED IN THE IGNITION CAUSING THE BATTERY TO DRAIN. THE VEHICLE WAS TAKEN BACK TO AN AUTHORIZED DEALER WHO DIAGNOSED THAT THE SHIFTER NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 119,000.
NHTSA ODI #10626766
57,534 miles · Aug 19, 2014
EnginePower Train
MY VEHICLE HAS A CRACKED RADIATOR AND ACCORDING TO OTHER HUMMER OWNERS THIS IS A COMMON DEFECT THAT HAPPENS TO THESE VEHICLES. HIS OVER HEATING CUASED ME TO PULL OVER ON A BUSY HIGHWAY WERE I COULD OF BEEN HIT AND KILLED, TOTAL FAILER OF VEHICLE ELECTRONICS, GMC DOES NOT WANT TO WORK ON THE VEHICLE THAT IS NOT UNDER WARRANTY, BE…
Read full complaint
MY VEHICLE HAS A CRACKED RADIATOR AND ACCORDING TO OTHER HUMMER OWNERS THIS IS A COMMON DEFECT THAT HAPPENS TO THESE VEHICLES. HIS OVER HEATING CUASED ME TO PULL OVER ON A BUSY HIGHWAY WERE I COULD OF BEEN HIT AND KILLED, TOTAL FAILER OF VEHICLE ELECTRONICS, GMC DOES NOT WANT TO WORK ON THE VEHICLE THAT IS NOT UNDER WARRANTY, BECAUSE OF THE MANY PROBLEMS WTH THIS VEHICLE. THIS CRACK IS WERE IT IS WEARING NEAR THE MOTOR. *TR
NHTSA ODI #10626232
Official recalls
2Jul 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.
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 ↗